/* ============================
   DERCVNE Website - Nice Inspired Clean Design
   White background, Blue text, Simple & Clean
   ============================ */

/* ============================
   CSS Custom Properties
   ============================ */
:root {
    /* Nice Brand Colors */
    --color-nice-blue: #004A93;
    --color-nice-blue-light: #0066CC;
    --color-nice-blue-dark: #003366;

    /* Accent Colors */
    --color-gold: #c9a227;
    --color-gold-light: #f4a020;

    /* Background Colors - Clean White */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f0f1f3;
    --color-bg-card: #ffffff;

    /* Text Colors */
    --color-text-primary: #004A93;
    --color-text-secondary: #1d1d1f;
    --color-text-muted: #6e6e73;

    /* Border Colors */
    --color-border: #e1e1e6;
    --color-border-light: #f0f0f5;

    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Noto Sans SC', sans-serif;
    --font-tech: 'Space Grotesk', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container */
    --container-max: 1400px;
    --container-padding: clamp(1.5rem, 4vw, 3rem);
}

/* ============================
   Reset & Base
   ============================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background-color: var(--color-nice-blue);
    color: #ffffff;
}

/* ============================
   Container
   ============================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ============================
   Notifications
   ============================ */
#notifications-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1100;
    display: flex;
    flex-direction: column;
}

.notification {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    font-size: 0.875rem;
    position: relative;
    transition: opacity 0.3s ease;
}

.notification-normal {
    background: var(--color-nice-blue);
    color: #ffffff;
}

.notification-important {
    background: linear-gradient(135deg, #c92727 0%, #ff4444 100%);
    color: #ffffff;
    animation: notificationPulse 2s ease-in-out infinite;
}

@keyframes notificationPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.9; }
}

.notification-message {
    font-weight: 500;
}

.notification-link {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: var(--transition-fast);
}

.notification-link:hover {
    opacity: 0.8;
}

.notification-close {
    position: absolute;
    right: 1.5rem;
    background: none;
    border: none;
    color: inherit;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.7;
    transition: var(--transition-fast);
    padding: 0.25rem;
    line-height: 1;
}

.notification-close:hover {
    opacity: 1;
}

/* ============================
   Navigation - Clean, No Background
   ============================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem var(--container-padding);
    transition: var(--transition-slow);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.logo {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    transition: var(--transition-fast);
    z-index: 10;
}

.logo:hover {
    opacity: 0.7;
}

.logo-en {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    background: linear-gradient(135deg, var(--color-nice-blue), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-cn {
    font-size: 0.6rem;
    color: var(--color-nice-blue);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    align-items: center;
}

.nav-menu a {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-nice-blue);
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--color-nice-blue-light);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 0.65rem 1.75rem;
    background: var(--color-nice-blue);
    color: #ffffff;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    border-radius: 4px;
    transition: var(--transition-normal);
}

.nav-cta:hover {
    background: var(--color-nice-blue-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 74, 147, 0.2);
}

/* ============================
   Dropdown Menu
   ============================ */
.nav-dropdown {
    position: relative;
}

.nav-dropdown > a {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-dropdown > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 0.25rem;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    transition: var(--transition-fast);
}

.nav-dropdown:hover > a::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 200px;
    padding: 0.5rem 0;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-bg-secondary);
    color: var(--color-nice-blue);
}

.dropdown-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    width: 28px;
    padding: 5px 0;
}

.hamburger span {
    height: 2px;
    background: var(--color-nice-blue);
    transition: var(--transition-fast);
    border-radius: 2px;
}

.hamburger span:nth-child(1) {
    width: 100%;
}

.hamburger span:nth-child(2) {
    width: 70%;
}

.hamburger span:nth-child(3) {
    width: 100%;
}

/* ============================
   Hero Section - Video with Overlaid Branding
   ============================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Video Background */
.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 74, 147, 0.05) 0%, rgba(255, 255, 255, 0.1) 100%);
    z-index: 1;
}

.hero-particles {
    display: none;
}

/* Hero Branding - Top Left */
.hero-branding {
    position: absolute;
    top: 4rem;
    left: var(--container-padding);
    z-index: 10;
}

.hero-branding .logo-en {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    background: linear-gradient(135deg, var(--color-nice-blue), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-branding .logo-cn {
    font-size: 0.7rem;
    color: var(--color-nice-blue);
    letter-spacing: 0.4em;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

/* Hero Navigation - Top Right */
.hero-nav {
    position: absolute;
    top: 4rem;
    right: var(--container-padding);
    z-index: 10;
}

.hero-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.hero-nav li {
    position: relative;
}

.hero-nav a {
    color: var(--color-nice-blue);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: var(--transition-fast);
    position: relative;
}

.hero-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-nice-blue);
    transition: width 0.3s ease;
}

.hero-nav a:hover {
    color: var(--color-nice-blue-light);
}

.hero-nav a:hover::after {
    width: 100%;
}

/* Hero Dropdown */
.hero-nav .nav-dropdown > a {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.hero-nav .nav-dropdown > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 0.25rem;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
}

.hero-nav .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    min-width: 180px;
    padding: 0.5rem 0;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-normal);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: block;
}

.hero-nav .dropdown-menu li {
    display: block;
    width: 100%;
}

.hero-nav .nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.hero-nav .dropdown-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    transition: var(--transition-fast);
    white-space: nowrap;
    width: 100%;
    box-sizing: border-box;
}

.hero-nav .dropdown-item:hover {
    background: var(--color-bg-secondary);
    color: var(--color-nice-blue);
}

/* Hero Hamburger Menu Button */
.hero-hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-top: 1rem;
    z-index: 10;
}

.hero-hamburger span {
    width: 100%;
    height: 2px;
    background: var(--color-nice-blue);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hero-hamburger:hover span:nth-child(1) {
    transform: translateY(2px);
}

.hero-hamburger:hover span:nth-child(3) {
    transform: translateY(-2px);
}

/* Mobile Navigation Menu */
.hero-mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    pointer-events: none;
}

.hero-mobile-nav.active {
    display: block;
    pointer-events: auto;
}

.mobile-nav-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hero-mobile-nav.active .mobile-nav-overlay {
    opacity: 1;
}

.mobile-nav-content {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    background: #ffffff;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: 5px 0 30px rgba(0, 0, 0, 0.1);
}

.hero-mobile-nav.active .mobile-nav-content {
    transform: translateX(0);
}

.mobile-nav-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 28px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.mobile-nav-close span {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-text-secondary);
    border-radius: 2px;
}

.mobile-nav-close span:nth-child(1) {
    transform: rotate(45deg);
}

.mobile-nav-close span:nth-child(2) {
    transform: rotate(-45deg);
}

.mobile-nav-close:hover span {
    background: var(--color-nice-blue);
}

.mobile-nav-list {
    list-style: none;
    padding: 5rem 1.5rem 2rem;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mobile-nav-link {
    display: block;
    padding: 1rem 0;
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border-bottom: 1px solid var(--color-border);
    transition: color 0.3s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-nice-blue);
}

.mobile-nav-dropdown {
    border-bottom: 1px solid var(--color-border);
}

.mobile-dropdown-toggle {
    display: block;
    padding: 1rem 0;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    padding-right: 2rem;
}

.mobile-dropdown-toggle::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.mobile-nav-dropdown.open .mobile-dropdown-toggle::after {
    transform: translateY(-50%) rotate(45deg);
}

.mobile-dropdown-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--color-bg-secondary);
}

.mobile-nav-dropdown.open .mobile-dropdown-list {
    max-height: 300px;
}

.mobile-dropdown-list li {
    border-bottom: 1px solid var(--color-border);
}

.mobile-dropdown-list li:last-child {
    border-bottom: none;
}

.mobile-dropdown-list a {
    display: block;
    padding: 0.85rem 1rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease, background 0.3s ease;
}

.mobile-dropdown-list a:hover {
    color: var(--color-nice-blue);
    background: rgba(0, 74, 147, 0.05);
}

/* Hero Subtitle - Bottom Left */
.hero-subtitle-wrapper {
    position: absolute;
    bottom: 4rem;
    left: var(--container-padding);
    z-index: 10;
    max-width: 600px;
}

.hero-subtitle {
    font-size: 1.5rem;
    line-height: 1.8;
    color: #ffffff;
    margin: 0;
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.5s;
    font-family: var(--font-display);
    font-weight: 400;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hide original hero content */
.hero-content {
    display: none;
}

/* ============================
   Section Header
   ============================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-tech);
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    color: var(--color-nice-blue);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 1px;
    background: var(--color-border);
}

.section-tag::before {
    right: calc(100% + 12px);
}

.section-tag::after {
    left: calc(100% + 12px);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.section-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-nice-blue), var(--color-gold));
    margin: 0 auto;
    border-radius: 2px;
}

/* ============================
   About Section
   ============================ */
.about {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-primary);
}

.section-bg {
    display: none;
}

.about-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    padding: var(--spacing-md);
}

.image-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border: 2px solid var(--color-nice-blue);
    border-radius: 12px;
    transform: rotate(2deg);
    opacity: 0.2;
}

.image-placeholder {
    position: relative;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    border-radius: 12px;
    overflow: hidden;
}

.about-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}

.about-text h3 {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-contact {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.contact-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-nice-blue);
}

/* ============================
   Brands Section
   ============================ */
.brands {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-secondary);
}

.brands-bg {
    display: none;
}

.brands-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

.brands-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.brand-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    border-radius: 12px;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-nice-blue), var(--color-gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-normal);
}

.brand-card:hover::before {
    transform: scaleX(1);
}

.brand-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-nice-blue);
    box-shadow: 0 15px 40px rgba(0, 74, 147, 0.1);
}

.brand-logo {
    margin-bottom: var(--spacing-sm);
    min-height: 50px;
    display: flex;
    align-items: center;
}

.brand-name {
    font-family: var(--font-tech);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
}

.brand-nice .brand-name {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-nice-blue), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ============================
   Nice Section
   ============================ */
.nice-section {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-primary);
}

.nice-bg {
    display: none;
}

.nice-content {
    position: relative;
}

.nice-main {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.nice-year {
    font-family: var(--font-tech);
    font-size: clamp(4rem, 15vw, 10rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-nice-blue) 0%, var(--color-nice-blue-light) 50%, var(--color-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.9;
    letter-spacing: -0.05em;
}

.nice-subtitle {
    display: block;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
}

.nice-main h3 {
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    max-width: 700px;
    margin: 0 auto;
    color: var(--color-text-secondary);
}

.nice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.nice-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    text-align: center;
    border-radius: 12px;
    transition: var(--transition-normal);
}

.nice-card:hover {
    border-color: var(--color-nice-blue);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 74, 147, 0.08);
}

.nice-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-sm);
    color: var(--color-nice-blue);
}

.nice-number {
    display: block;
    font-family: var(--font-tech);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-nice-blue);
    letter-spacing: -0.02em;
}

.nice-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.nice-fields {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.nice-fields h4 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.fields-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.field-item {
    padding: 0.6rem 1.25rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    border-radius: 100px;
    transition: var(--transition-fast);
    color: var(--color-text-secondary);
}

.field-item:hover {
    border-color: var(--color-nice-blue);
    color: var(--color-nice-blue);
    background: var(--color-bg-tertiary);
}

.nice-eco {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(0, 74, 147, 0.05), rgba(201, 162, 39, 0.05));
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.eco-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.eco-icon {
    font-size: 1.5rem;
}

.eco-title {
    font-family: var(--font-tech);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-nice-blue);
    letter-spacing: 0.1em;
}

.nice-eco p {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

/* ============================
   Position Section
   ============================ */
.position {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-secondary);
}

.position-bg {
    display: none;
}

.position-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.position-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    border-radius: 12px;
    transition: var(--transition-normal);
}

.position-card:hover {
    border-color: var(--color-nice-blue);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 74, 147, 0.08);
}

.position-number {
    font-family: var(--font-tech);
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-nice-blue);
    opacity: 0.1;
    line-height: 1;
    margin-bottom: -1rem;
    letter-spacing: -0.05em;
}

.position-content h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.position-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.position-features {
    list-style: none;
}

.position-features li {
    padding: 0.5rem 0 0.5rem 1.5rem;
    position: relative;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.position-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    background: var(--color-nice-blue);
    border-radius: 50%;
}

/* ============================
   Culture Section
   ============================ */
.culture {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-primary);
}

.culture-bg {
    display: none;
}

.culture-content {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.culture-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: var(--transition-normal);
}

.culture-item:hover {
    border-color: var(--color-nice-blue);
    transform: translateY(-3px);
}

.culture-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-nice-blue);
}

.culture-item h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.culture-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: 1rem;
}

/* ============================
   Services Section
   ============================ */
.services {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-secondary);
}

.services-bg {
    display: none;
}

.services-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    text-align: center;
    border-radius: 12px;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-nice-blue), var(--color-gold));
    transform: scaleX(0);
    transform-origin: center;
    transition: var(--transition-normal);
}

.service-card:hover::after {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-nice-blue);
    box-shadow: 0 15px 35px rgba(0, 74, 147, 0.08);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-nice-blue);
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.service-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================
   Branches Section
   ============================ */
.branches {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-primary);
}

.branches-bg {
    display: none;
}

.branches-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.branches-map {
    aspect-ratio: 4/3;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

#chinaMapContainer {
    width: 100%;
    height: 100%;
    border-radius: 12px;
}

.branches-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.branch-item {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    font-size: 0.9rem;
    transition: var(--transition-fast);
    border-radius: 8px;
}

.branch-item:hover {
    border-color: var(--color-nice-blue);
    background: rgba(0, 74, 147, 0.05);
}

.branch-item.branch-main {
    grid-column: span 2;
    border-color: var(--color-nice-blue);
    background: rgba(0, 74, 147, 0.08);
}

.branch-item.branch-highlight {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(0, 74, 147, 0.1), rgba(201, 162, 39, 0.08));
    border-color: var(--color-gold);
    text-align: center;
    font-weight: 600;
}

.branch-name {
    color: var(--color-text-secondary);
}

.branch-item.branch-main .branch-name,
.branch-item.branch-highlight .branch-name {
    color: var(--color-text-primary);
}

/* ============================
   Contact Section
   ============================ */
.contact {
    padding: var(--spacing-xl) 0;
    position: relative;
    background: var(--color-bg-secondary);
}

.contact-bg {
    display: none;
}

.contact-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.contact-info > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item-large {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: var(--transition-fast);
}

.contact-item-large:hover {
    border-color: var(--color-nice-blue);
    box-shadow: 0 5px 20px rgba(0, 74, 147, 0.08);
}

.contact-icon-large {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--color-nice-blue);
}

.contact-text-large {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1.1rem;
    color: var(--color-text-primary);
}

/* ============================
   QR Code Section
   ============================ */
.qrcode-container {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.qrcode-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.qrcode-frame {
    width: 100%;
    aspect-ratio: 1 / 1;
    max-width: 160px;
    min-width: 120px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.qrcode-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-nice-blue), var(--color-gold));
    opacity: 0;
    transition: var(--transition-normal);
}

.qrcode-frame:hover {
    border-color: var(--color-nice-blue);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 74, 147, 0.1);
}

.qrcode-frame:hover::before {
    opacity: 1;
}

.qrcode-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.qrcode-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.05em;
    transition: var(--transition-fast);
}

.qrcode-item:hover .qrcode-label {
    color: var(--color-nice-blue);
}

/* Placeholder for missing QR code images */
.qrcode-img[src=""] {
    display: none;
}

.qrcode-frame:has(.qrcode-img[src=""]) {
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, rgba(0, 74, 147, 0.05) 100%);
}

.qrcode-frame:has(.qrcode-img[src=""])::after {
    content: '二维码';
    font-size: 0.7rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

.contact-form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.9rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-nice-blue);
    box-shadow: 0 0 0 3px rgba(0, 74, 147, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: #ffffff;
    color: var(--color-text-primary);
}

/* Required field indicator */
.required {
    color: var(--color-nice-blue);
    margin-left: 2px;
}

/* Form message styles */
.form-message {
    display: none;
    padding: 1rem;
    border-radius: 8px;
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    animation: fadeInUp 0.3s ease;
}

.form-message-success {
    background: rgba(0, 74, 147, 0.1);
    border: 1px solid var(--color-nice-blue);
    color: var(--color-nice-blue);
}

.form-message-error {
    background: rgba(255, 100, 100, 0.1);
    border: 1px solid #ff6464;
    color: #ff6464;
}

/* Submit button */
.btn-submit {
    width: 100%;
    background: var(--color-nice-blue);
    color: #ffffff;
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    padding: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 8px;
    transition: var(--transition-normal);
}

.btn-submit:hover {
    background: var(--color-nice-blue-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 74, 147, 0.2);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ============================
   Footer
   ============================ */
.footer {
    position: relative;
    z-index: 1;
}

.footer-top {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo-en {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-nice-blue), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-logo-cn {
    font-size: 0.65rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.25em;
    margin: 0.25rem 0 var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-link-group h4 {
    font-size: 0.75rem;
    color: var(--color-nice-blue);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-link-group ul {
    list-style: none;
}

.footer-link-group li {
    margin-bottom: var(--spacing-sm);
}

.footer-link-group a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.footer-link-group a:hover {
    color: var(--color-nice-blue);
}

.footer-link-group li:not(:has(a)) {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

.footer-bottom {
    padding: var(--spacing-md) 0;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* ============================
   Scroll Animations
   ============================ */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================
   Responsive Design
   ============================ */
@media (max-width: 1024px) {
    :root {
        --container-padding: clamp(1rem, 4vw, 2rem);
    }

    .about-content,
    .contact-content,
    .branches-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .about-image {
        order: -1;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Hide hero elements on smaller screens */
    .hero-branding .logo-en {
        font-size: 1.5rem;
    }

    .hero-nav ul {
        gap: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    /* 确保服务卡片在移动端可见 */
    .service-card {
        opacity: 1 !important;
        transform: none !important;
    }

    .services-grid {
        opacity: 1 !important;
        transform: none !important;
    }

    /* Show hero hamburger menu on mobile */
    .hero-hamburger {
        display: flex;
    }

    /* Hide regular nav links on mobile, keep only login button */
    .nav-link-item {
        display: none !important;
    }

    .nav-login-item {
        display: block !important;
    }

    /* Adjust hero-nav on mobile */
    .hero-nav {
        top: 1rem;
    }

    .hero-nav ul {
        gap: 0;
    }

    /* Show mobile nav */
    .hero-mobile-nav {
        display: block;
    }

    /* Hide desktop nav */
    .nav-menu,
    .nav-cta,
    .navbar {
        display: none;
    }

    /* Show mobile nav if needed */
    .hamburger {
        display: flex;
    }

    /* Hero adjustments */
    .hero-branding {
        top: 2rem;
        left: 1.5rem;
    }

    .hero-branding .logo-en {
        font-size: 1.3rem;
    }

    .hero-nav {
        top: 2rem;
        right: 1.5rem;
    }

    .hero-nav ul {
        gap: 1rem;
    }

    .hero-nav a {
        font-size: 0.75rem;
    }

    .hero-subtitle-wrapper {
        bottom: 2rem;
        left: 1.5rem;
        right: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-tag::before,
    .section-tag::after {
        display: none;
    }

    .branches-list {
        grid-template-columns: 1fr;
    }

    .contact-form-wrapper {
        padding: var(--spacing-md);
    }

    .qrcode-container {
        gap: var(--spacing-sm);
    }

    .qrcode-frame {
        max-width: 100px;
        min-width: 80px;
    }

    .qrcode-label {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .footer-links {
        grid-template-columns: 1fr;
    }

    .nice-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================
   Print Styles
   ============================ */
@media print {
    .navbar,
    .hero-scroll,
    .contact-form-wrapper,
    .hero-nav {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}

/* ============================
   Accessibility
   ============================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-nice-blue);
    outline-offset: 2px;
}

/* ============================
   User Dropdown Menu (Logged In)
   ============================ */
.login-trigger.logged-in {
    background: transparent;
    color: var(--color-text-primary) !important;
    padding: 0.5rem 0;
}

.user-name {
    font-weight: 500;
}

.user-dropdown-arrow {
    font-size: 0.7rem;
    margin-left: 0.35rem;
    transition: transform 0.2s ease;
}

.login-trigger.logged-in:hover .user-dropdown-arrow {
    transform: rotate(180deg);
}

.user-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.75rem;
    min-width: 160px;
    padding: 0.5rem 0;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-normal);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.user-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.user-dropdown-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--color-nice-blue);
}

.user-dropdown-item:hover {
    background: var(--color-bg-secondary);
    color: var(--color-nice-blue);
}

/* ============================
   Docs Modal - Technical Documents
   ============================ */
.docs-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}

.docs-modal.active {
    display: flex;
}

.docs-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.docs-modal-content {
    position: relative;
    z-index: 2;
    background: #ffffff;
    border-radius: 16px;
    padding: 2rem;
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.15);
    animation: modalSlideIn 0.3s ease;
}

.docs-modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.docs-modal-close:hover {
    color: var(--color-nice-blue);
    background: var(--color-bg-tertiary);
    border-radius: 50%;
}

.docs-modal-close svg {
    width: 20px;
    height: 20px;
}

.docs-modal-header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.docs-modal-header h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.docs-modal-header p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* 分类标签 */
.docs-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.docs-tab {
    padding: 0.5rem 1.25rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.docs-tab:hover {
    border-color: var(--color-nice-blue);
    color: var(--color-nice-blue);
}

.docs-tab.active {
    background: var(--color-nice-blue);
    border-color: var(--color-nice-blue);
    color: #ffffff;
}

/* 管理员区域 */
.docs-admin-section {
    display: none !important;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

.docs-admin-section.show {
    display: flex !important;
}

.docs-upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    background: var(--color-gold);
    color: var(--color-bg-primary);
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.docs-upload-btn svg {
    width: 18px;
    height: 18px;
}

.docs-upload-btn:hover {
    background: var(--color-gold-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(201, 162, 39, 0.2);
}

/* 加载状态 */
.docs-loading {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
    color: var(--color-text-muted);
}

.docs-loading.show {
    display: flex;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-bg-tertiary);
    border-top-color: var(--color-nice-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* 空状态 */
.docs-empty {
    display: none;
    text-align: center;
    padding: 3rem 0;
    color: var(--color-text-muted);
}

.docs-empty.show {
    display: block;
}

/* 文件列表 */
.docs-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
    max-height: 400px;
}

.doc-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    transition: var(--transition-fast);
}

.doc-item:hover {
    border-color: var(--color-nice-blue);
}

.doc-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    color: var(--color-nice-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.doc-icon svg {
    width: 100%;
    height: 100%;
}

.doc-info {
    flex: 1;
    min-width: 0;
}

.doc-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 0.35rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.doc-category {
    padding: 0.2rem 0.5rem;
    background: rgba(0, 74, 147, 0.1);
    color: var(--color-nice-blue);
    border-radius: 4px;
}

.doc-actions {
    display: flex;
    gap: 0.5rem;
}

.doc-download {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.75rem;
    background: var(--color-nice-blue);
    color: #ffffff;
    text-decoration: none;
    font-size: 0.8rem;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.doc-download svg {
    width: 16px;
    height: 16px;
}

.doc-download:hover {
    background: var(--color-nice-blue-light);
}

.doc-delete {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    color: #ff6464;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.doc-delete svg {
    width: 16px;
    height: 16px;
}

.doc-delete:hover {
    background: rgba(255, 100, 100, 0.1);
}

/* 分页 */
.docs-pagination {
    margin-top: 1.5rem;
}

.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.pagination-btn {
    padding: 0.5rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.pagination-btn:hover {
    border-color: var(--color-nice-blue);
    color: var(--color-nice-blue);
}

.pagination-btn.active {
    background: var(--color-nice-blue);
    border-color: var(--color-nice-blue);
    color: #ffffff;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .docs-modal-content {
        width: 95%;
        padding: 1.5rem;
        max-height: 90vh;
    }

    .docs-tabs {
        flex-wrap: wrap;
    }

    .doc-item {
        flex-wrap: wrap;
    }

    .doc-actions {
        width: 100%;
        justify-content: flex-end;
        margin-top: 0.5rem;
    }

    .doc-meta {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .docs-admin-section.show {
        justify-content: center;
    }
}


/* ============================
   Utility Classes
   ============================ */
.text-gradient {
    background: linear-gradient(135deg, var(--color-nice-blue), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Hide elements */
.hero-cta,
.hero-stats,
.hero-scroll,
.hero-badge {
    display: none;
}

/* ============================
   Auth Modals - Login/Register/Forgot Password
   ============================ */
#auth-modals {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    pointer-events: none;
}

.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}

.auth-modal.active {
    display: flex;
}

.auth-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.auth-modal-content {
    position: relative;
    z-index: 2;
    background: #ffffff;
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.15);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.auth-modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-modal-close:hover {
    color: var(--color-nice-blue);
    background: var(--color-bg-tertiary);
    border-radius: 50%;
}

.auth-modal-close svg {
    width: 20px;
    height: 20px;
}

.auth-modal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-modal-header h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.auth-modal-header p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.auth-form label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.auth-form input {
    padding: 0.85rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--color-text-primary);
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

.auth-form input:focus {
    outline: none;
    border-color: var(--color-nice-blue);
    box-shadow: 0 0 0 3px rgba(0, 74, 147, 0.1);
}

.auth-form-actions {
    display: flex;
    justify-content: flex-end;
}

.auth-link {
    color: var(--color-nice-blue);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.auth-link:hover {
    color: var(--color-nice-blue-light);
    text-decoration: underline;
}

.auth-submit {
    padding: 0.9rem;
    background: var(--color-nice-blue);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: var(--transition-normal);
}

.auth-submit:hover {
    background: var(--color-nice-blue-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 74, 147, 0.2);
}

.auth-form-footer {
    text-align: center;
    padding-top: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.auth-form-footer .auth-link {
    margin-left: 0.25rem;
    font-weight: 500;
}

/* Login trigger in nav */
.login-trigger {
    padding: 0.5rem 1rem;
    background: var(--color-nice-blue);
    color: #ffffff !important;
    border-radius: 6px;
    transition: var(--transition-normal);
}

.login-trigger:hover {
    background: var(--color-nice-blue-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 74, 147, 0.2);
}

/* Auth form message */
.auth-form-message {
    display: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    animation: fadeInUp 0.3s ease;
}

.auth-form-message.show {
    display: block;
}

.auth-form-message.success {
    background: rgba(0, 74, 147, 0.1);
    border: 1px solid var(--color-nice-blue);
    color: var(--color-nice-blue);
}

.auth-form-message.error {
    background: rgba(255, 100, 100, 0.1);
    border: 1px solid #ff6464;
    color: #ff6464;
}

/* Loading state */
.auth-submit.loading {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

.auth-submit.loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 0.5rem;
    border: 2px solid #ffffff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .auth-modal-content {
        margin: 1rem;
        max-width: calc(100% - 2rem);
        padding: 2rem 1.5rem;
    }

    .auth-modal-header h2 {
        font-size: 1.5rem;
    }
}

/* 确认弹窗小型样式 */
.auth-modal-small {
    max-width: 360px;
}

.auth-modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.auth-modal-actions button {
    flex: 1;
    padding: 0.85rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--color-nice-blue);
    color: #ffffff;
}

.btn-primary:hover {
    background: #003d7a;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 74, 147, 0.3);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background: var(--color-border);
}