/* ========================================
   KidsEnglishTest.com - Main Stylesheet
   Theme: Bright, Clean, Kid-friendly
   Colors: White BG + Orange / Blue / Green / Red
   ======================================== */

/* --- CSS Variables (Design Tokens) --- */
:root {
    /* Main colors */
    --color-orange: #FF9F43;
    --color-orange-light: #FFE7C0;
    --color-orange-dark: #E67E22;
    --color-blue: #4A90E2;
    --color-blue-light: #D6EAF8;
    --color-blue-dark: #2E86C1;
    --color-green: #2ECC71;
    --color-green-light: #D5F5E3;
    --color-green-dark: #27AE60;
    --color-red: #FF6B6B;
    --color-red-light: #FADBD8;
    --color-red-dark: #E74C3C;
    --color-purple: #bb1eb5;
    --color-purple-light: #e986f2;
    --color-purple-dark: #840f80;

    /* Neutral colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F8F9FA;
    --color-gray-100: #F0F2F5;
    --color-gray-200: #E2E8F0;
    --color-gray-300: #CBD5E0;
    --color-gray-500: #718096;
    --color-gray-700: #4A5568;
    --color-gray-900: #1A202C;

    /* Typography */
    --font-main: 'Segoe UI', 'Comic Sans MS', 'Arial Rounded MT Bold', Arial, sans-serif;
    --font-heading: 'Comic Sans MS', 'Arial Rounded MT Bold', 'Segoe UI', sans-serif;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
        --shadow-lg: 0 8px 24px rgb(0 0 0 / 58%);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-white);
    color: var(--color-gray-900);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-blue);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: bold;
    line-height: 1.3;
    color: var(--color-gray-900);
}

/* --- Layout --- */
.page-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    width: 100%;
}

/* --- Header / Navigation --- */
.site-header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid #4a90e2;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    gap: var(--space-lg);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.site-logo img {
    height: 56px;
    width: auto;
    border-radius: var(--radius-sm);
}

.site-logo-text {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(165deg, #26b115 0%, #350687 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Main Nav */
.main-nav {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-weight: 600;
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    font-size: 15px;
    cursor: pointer;
    user-select: none;
}

.nav-link:hover {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.nav-link.active {
    background-color: var(--color-blue);
    color: var(--color-white);
}

.nav-link .dropdown-arrow {
    display: inline-block;
    margin-left: 4px;
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link .dropdown-arrow {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    background-color: var(--color-white);
    border: 2px solid var(--color-orange-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 1001;
}

.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.dropdown-item:hover {
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
    transform: translateX(4px);
}

.dropdown-item.orange-hover:hover {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.dropdown-item.green-hover:hover {
    background-color: var(--color-green-light);
    color: var(--color-green-dark);
}

.dropdown-item.red-hover:hover {
    background-color: var(--color-red-light);
    color: var(--color-red-dark);
}

.dropdown-item .badge-new {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    background-color: var(--color-red);
    color: var(--color-white);
    font-size: 10px;
    font-weight: bold;
    border-radius: var(--radius-full);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-gray-100);
    margin: var(--space-xs) var(--space-sm);
}

/* Header Right (Language Switcher) */
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.lang-switcher {
    position: relative;
}

.lang-button {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-gray-50);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.lang-button:hover {
    border-color: var(--color-blue);
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.lang-button .lang-icon {
    font-size: 18px;
}

.lang-button .lang-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

/* 旧 hover dropdown 已废弃，改为点击打开 modal，保留 lang-button 的 arrow 但去掉 hover 旋转 */
.lang-switcher:hover .lang-arrow {
    /* transform: rotate(180deg);  -- no longer needed for modal pattern */
}

/* --- Language Modal --- */
.lang-modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lang-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lang-modal {
    background: var(--color-white);
    border-radius: 16px;
    width: 92%;
    max-width: 900px;
    max-height: 95vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.25s ease;
    display: flex;
    flex-direction: column;
}

.lang-modal-overlay.active .lang-modal {
    transform: translateY(0) scale(1);
}

.lang-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: linear-gradient(135deg, #4A90E2 0%, #27AE60 100%);
    color: white;
    flex-shrink: 0;
}

.lang-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.lang-modal-close {
    background: rgba(255, 255, 255, 0.25);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.lang-modal-close:hover {
    background: rgba(255, 255, 255, 0.4);
}

.lang-modal-body {
    padding: 16px 24px 24px;
    overflow-y: auto;
    flex: 1;
}

.lang-group {
    margin-bottom: 16px;
}

.lang-group:last-child {
    margin-bottom: 0;
}

.lang-group-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 10px 0;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--color-gray-100);
}

.lang-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    gap: 10px;
}

.lang-option-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 12px;
    background: var(--color-gray-50);
    border: 2px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    min-height: 50px;
}

.lang-option-btn:hover {
    background: var(--color-blue-light);
    border-color: var(--color-blue);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.2);
}

.lang-option-btn.active {
    background: var(--color-blue);
    border-color: var(--color-blue-dark);
    color: white;
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.4);
}

.lang-option-btn.active .lang-option-en {
    color: rgba(255, 255, 255, 0.85);
}

.lang-option-native {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-gray-800);
    line-height: 1.2;
}

.lang-option-btn.active .lang-option-native {
    color: white;
}

.lang-option-en {
    font-size: 11px;
    font-weight: 400;
    color: var(--color-gray-500);
    margin-top: 2px;
}

/* --- Mobile Language Modal Adjustments --- */
@media (max-width: 640px) {
    .lang-modal {
        width: 95%;
        max-height: 85vh;
    }
    .lang-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 6px;
    }
    .lang-option-btn {
        padding: 8px 10px;
        min-height: 44px;
    }
    .lang-option-native {
        font-size: 14px;
    }
    .lang-modal-header {
        padding: 14px 18px;
    }
    .lang-modal-body {
        padding: 12px 16px 16px;
    }
}

/* --- RTL (Right-to-Left) Language Support --- */
.lang-option-btn.rtl {
    text-align: right;
    direction: rtl;
}

.lang-option-btn.rtl .lang-option-native {
    text-align: right;
}

/* --- Mobile Menu Toggle --- */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--color-gray-700);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

/* --- Hero Section --- */
.hero-section {
    background: linear-gradient(135deg, var(--color-blue-light) 0%, var(--color-orange-light) 50%, var(--color-green-light) 100%);
    padding: var(--space-2xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before,
.hero-section::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
}

.hero-section::before {
    width: 200px;
    height: 200px;
    background-color: var(--color-orange);
    top: -60px;
    right: -60px;
}

.hero-section::after {
    width: 150px;
    height: 150px;
    background-color: var(--color-green);
    bottom: -40px;
    left: -40px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-title {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: var(--space-md);
    color: var(--color-gray-900);
}

.hero-title .highlight-orange {
    color: var(--color-orange-dark);
}

.hero-title .highlight-blue {
    color: var(--color-blue-dark);
}

.hero-title .highlight-green {
    color: var(--color-green-dark);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-gray-700);
    margin-bottom: var(--space-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 14px;
    box-shadow: var(--shadow-sm);
}

.hero-badge.orange {
    color: var(--color-orange-dark);
    border: 2px solid var(--color-orange-light);
}

.hero-badge.blue {
    color: var(--color-blue-dark);
    border: 2px solid var(--color-blue-light);
}

.hero-badge.green {
    color: var(--color-green-dark);
    border: 2px solid var(--color-green-light);
}

.hero-badge.red {
    color: var(--color-red-dark);
    border: 2px solid var(--color-red-light);
}

/* --- Test Window Section --- */
.test-section {
    padding: var(--space-2xl) 0;
    background-color: var(--color-white);
}

.test-section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.test-section-title h2 {
    font-size: 32px;
    color: var(--color-gray-900);
    margin-bottom: var(--space-sm);
}

.test-section-title p {
    font-size: 16px;
    color: var(--color-gray-500);
}

.test-window-wrapper {
    background-color: var(--color-white);
    border: 3px solid var(--color-blue-light);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.test-window-wrapper iframe {
    width: 100%;
    min-height: 700px;
    border: none;
    border-radius: var(--radius-lg);
    display: block;
}

/* --- Certificate Showcase Section --- */
.certificate-section {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, #FFFFFF 0%, #FFFFFF 50%, #d3eae5 100%);
}

.certificate-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.certificate-text {
    max-width: 520px;
}

.certificate-badge {
    display: inline-block;
    padding: 6px 16px;
    background: #F3E8FF;
    color: #7C3AED;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.certificate-text h2 {
    font-size: 36px;
    color: var(--color-gray-900);
    margin-bottom: 16px;
    line-height: 1.25;
}

.certificate-text h2 .highlight-purple {
    background: linear-gradient(135deg, #7C3AED, #712e8d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.certificate-lead {
    font-size: 17px;
    color: var(--color-gray-500);
    line-height: 1.6;
    margin-bottom: 28px;
}

.certificate-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px 0;
}

.certificate-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--color-gray-700);
    border-bottom: 1px solid #E5E7EB;
}

.certificate-features li:last-child {
    border-bottom: none;
}

.certificate-features li span {
    font-size: 20px;
    flex-shrink: 0;
}

.certificate-features li strong {
    color: var(--color-gray-900);
}

.certificate-cta {
    display: inline-block;
    padding: 14px 32px;
    background: linear-gradient(135deg, #733290, #750dd7);
    color: #fff;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.certificate-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
    color: #fff;
}

.certificate-showcase {
    position: relative;
    height: 480px;
}

.cert-card {
    position: absolute;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-sizing: border-box;
}

.cert-card:hover {
    transform: translateY(-8px) rotate(0deg) !important;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
    z-index: 10;
}

.cert-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cert-landscape {
    width: 400px;
    height: 300px;
    top: 20px;
    left: 10px;
    transform: rotate(-3deg);
    border: 4px solid #fff;
}

.cert-portrait {
    width: 300px;
    height: 400px;
    top: 40px;
    right: 20px;
    transform: rotate(4deg);
    border: 4px solid #fff;
    z-index: 5;
}

/* --- Features Section --- */
.features-section {
    padding: var(--space-2xl) 0;
    background-color: var(--color-gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-header h2 {
    font-size: 32px;
    color: var(--color-gray-900);
    margin-bottom: var(--space-sm);
}

.section-header p {
    font-size: 16px;
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-card.orange-card {
    border-color: var(--color-orange-light);
}

.feature-card.orange-card:hover {
    border-color: var(--color-orange);
}

.feature-card.blue-card {
    border-color: var(--color-blue-light);
}

.feature-card.blue-card:hover {
    border-color: var(--color-blue);
}

.feature-card.green-card {
    border-color: var(--color-green-light);
}

.feature-card.green-card:hover {
    border-color: var(--color-green);
}

.feature-card.red-card {
    border-color: var(--color-red-light);
}

.feature-card.red-card:hover {
    border-color: var(--color-red);
}

.feature-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto var(--space-md);
}

.orange-card .feature-icon {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.blue-card .feature-icon {
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.green-card .feature-icon {
    background-color: var(--color-green-light);
    color: var(--color-green-dark);
}

.red-card .feature-icon {
    background-color: var(--color-red-light);
    color: var(--color-red-dark);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: var(--space-sm);
    color: var(--color-gray-900);
}

.feature-card p {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* --- Tests Overview Section --- */
.tests-section {
    padding: var(--space-2xl) 0;
    background-color: var(--color-white);
}

.tests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.test-card {
    display: block;
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 5px solid var(--color-gray-200);
    cursor: pointer;
}

.test-card:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
}

.test-card.starter {
    border-left-color: var(--color-orange);
}

.test-card.starters {
    border-left-color: var(--color-blue);
}

.test-card.movers {
    border-left-color: var(--color-green);
}

.test-card.flyers {
    border-left-color: var(--color-red);
}

.test-card.toefl1 {
    border-left-color: var(--color-orange);
}

.test-card.toefl2 {
    border-left-color: var(--color-blue);
}

.test-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.test-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.starter .test-card-icon {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.starters .test-card-icon {
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.movers .test-card-icon {
    background-color: var(--color-green-light);
    color: var(--color-green-dark);
}

.flyers .test-card-icon {
    background-color: var(--color-red-light);
    color: var(--color-red-dark);
}

.toefl1 .test-card-icon {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.toefl2 .test-card-icon {
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.test-card h3 {
    font-size: 18px;
    color: var(--color-gray-900);
}

.test-card p {
    font-size: 14px;
    color: var(--color-gray-500);
    margin-bottom: var(--space-md);
}

.test-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.test-level {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}

.starter .test-level {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.starters .test-level {
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.movers .test-level {
    background-color: var(--color-green-light);
    color: var(--color-green-dark);
}

.flyers .test-level {
    background-color: var(--color-red-light);
    color: var(--color-red-dark);
}

.toefl1 .test-level {
    background-color: var(--color-orange-light);
    color: var(--color-orange-dark);
}

.toefl2 .test-level {
    background-color: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.test-card-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-blue);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition-fast);
}

.test-card:hover .test-card-link {
    gap: 8px;
}

/* --- Footer --- */
.site-footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-300);
    margin-top: auto;
}

.footer-top {
    padding: var(--space-2xl) 0 var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-xl);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: bold;
    color: var(--color-white);
    margin-bottom: var(--space-md);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    border-radius: 2px;
}

.footer-col.about-col h4::after {
    background-color: var(--color-orange);
}

.footer-col.tests-col h4::after {
    background-color: var(--color-blue);
}

.footer-col.certs-col h4::after {
    background-color: var(--color-green);
}

.footer-col.contact-col h4::after {
    background-color: var(--color-red);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer-logo img {
    height: 40px;
    width: auto;
    border-radius: var(--radius-sm);
}

.footer-logo-text {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: bold;
    color: var(--color-white);
}

.footer-col p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-gray-300);
    margin-bottom: var(--space-md);
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: 14px;
    color: var(--color-gray-300);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-links a::before {
    content: '›';
    color: var(--color-blue);
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-links a:hover::before {
    transform: translateX(3px);
    color: var(--color-orange);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    font-size: 14px;
}

.contact-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.contact-item.email .contact-icon {
    background-color: var(--color-blue);
}

.contact-item.phone .contact-icon {
    background-color: var(--color-green);
}

.contact-item.address .contact-icon {
    background-color: var(--color-orange);
}

.contact-text {
    color: var(--color-gray-300);
    line-height: 1.5;
}

.contact-text strong {
    display: block;
    color: var(--color-white);
    margin-bottom: 2px;
}

.contact-text a:hover {
    color: var(--color-orange);
}

.footer-bottom {
    padding: var(--space-md) 0;
    text-align: center;
    font-size: 13px;
    color: var(--color-gray-500);
}

.footer-bottom-links {
    margin-bottom: var(--space-sm);
}

.footer-bottom-links a {
    color: var(--color-gray-300);
    margin: 0 var(--space-sm);
}

.footer-bottom-links a:hover {
    color: var(--color-white);
}

/* --- Sub-page Styles --- */
.subpage-header {
    background: linear-gradient(135deg, var(--color-blue-light) 0%, var(--color-orange-light) 100%);
    padding: var(--space-2xl) 0;
    text-align: center;
    border-bottom: 3px solid var(--color-blue);
}

.subpage-header h1 {
    font-size: 36px;
    color: var(--color-gray-900);
    margin-bottom: var(--space-sm);
}

.subpage-header p {
    font-size: 16px;
    color: var(--color-gray-700);
}

.subpage-content {
    /*padding: var(--space-2xl) 0;*/
    flex: 1;
}

.content-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--color-gray-100);
}

.content-card h2 {
    font-size: 24px;
    margin-bottom: var(--space-md);
    color: var(--color-blue-dark);
}

.content-card h3 {
    font-size: 18px;
    margin: var(--space-md) 0 var(--space-sm);
    color: var(--color-gray-900);
}

.content-card p {
    margin-bottom: var(--space-md);
    color: var(--color-gray-700);
    line-height: 1.8;
}

.content-card ul {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.content-card ul li {
    list-style: disc;
    margin-bottom: var(--space-sm);
    color: var(--color-gray-700);
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-main);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--color-orange);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-orange-dark);
    box-shadow: 0 6px 16px rgba(255, 159, 67, 0.3);
    color: var(--color-white);
}
.btn-gray {
    background-color: var(--color-gray-200);
    color: var(--color-black);
}
.btn-gray:hover {
    background-color: var(--color-gray-300);
    box-shadow: 0 6px 16px rgba(255, 255, 255, 0.3);
    color: var(--color-black);
}
.btn-red {
    background-color: var(--color-red);
    color: var(--color-white);
}
.btn-red:hover {
    color: var(--color-white);
    background-color: var(--color-red-dark);
}


.btn-blue {
    background-color: var(--color-blue);
    color: var(--color-white);
}

.btn-blue:hover {
    background-color: var(--color-blue-dark);
    box-shadow: 0 6px 16px rgba(74, 144, 226, 0.3);
    color: var(--color-white);
}

.btn-green {
    background-color: var(--color-green);
    color: var(--color-white);
}

.btn-green:hover {
    background-color: var(--color-green-dark);
    box-shadow: 0 6px 16px rgba(46, 204, 113, 0.3);
    color: var(--color-white);
}
.btn-purple {
    background-color: var(--color-purple);
    color: var(--color-white);
}

.btn-purple:hover {
    background-color: var(--color-purple-dark);
    box-shadow: 0 6px 16px rgba(153, 63, 237, 0.3);
    color: var(--color-white);
}

/* --- Certificate Page Styles --- */
.cert-banner {
    background: linear-gradient(135deg, var(--color-green-light) 0%, var(--color-blue-light) 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    text-align: center;
    border: 2px solid var(--color-green);
}

.cert-banner-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin: 0 auto var(--space-md);
    box-shadow: var(--shadow-md);
    color: var(--color-green);
}

.cert-banner h2 {
    font-size: 28px;
    color: var(--color-green-dark);
    margin-bottom: var(--space-sm);
}

.cert-banner p {
    font-size: 16px;
    color: var(--color-gray-700);
    max-width: 600px;
    margin: 0 auto;
}

.cert-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.cert-step {
    text-align: center;
    padding: var(--space-lg);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-100);
}

.cert-step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-blue) 100%);
    color: var(--color-white);
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
}

.cert-step h4 {
    font-size: 16px;
    margin-bottom: var(--space-sm);
    color: var(--color-gray-900);
}

.cert-step p {
    font-size: 13px;
    color: var(--color-gray-500);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .nav-container {
        flex-wrap: wrap;
    }

    .main-nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
    }

    .certificate-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .certificate-text {
        max-width: 100%;
        text-align: center;
    }

    .certificate-features li {
        justify-content: center;
    }

    .certificate-showcase {
        position: relative;
        height: 420px;
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .certificate-section {
        padding: var(--space-xl) 0;
        overflow: hidden;
    }

    .certificate-text h2 {
        font-size: 24px;
        line-height: 1.3;
        word-break: break-word;
    }

    .certificate-lead {
        font-size: 15px;
    }

    .certificate-features li {
        font-size: 14px;
        gap: 8px;
    }

    .certificate-features li span {
        font-size: 18px;
    }

    .certificate-cta {
        display: block;
        text-align: center;
    }

    .certificate-showcase {
        position: relative;
        height: 360px;
        max-width: 400px;
        margin: 0 auto;
    }

    .cert-landscape {
        width: 220px;
        height: 160px;
        top: 10px;
        left: 50%;
        transform: translateX(-60%) rotate(-4deg);
    }

    .cert-portrait {
        width: 140px;
        height: 220px;
        top: 35px;
        left: 50%;
        transform: translateX(10%) rotate(5deg);
    }
}

@media (max-width: 480px) {
    .certificate-text h2 {
        font-size: 22px;
    }

    .certificate-lead {
        font-size: 14px;
    }

    .certificate-showcase {
        position: static;
        height: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 24px;
        padding: 20px 0;
    }

    .cert-card {
        position: static;
        transform: none !important;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
        transition: none;
    }

    .cert-card:hover {
        transform: none !important;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    }

    .cert-landscape {
        width: 85%;
        max-width: 300px;
        height: auto;
        aspect-ratio: 4 / 3;
        left: auto;
        top: auto;
        transform: none;
    }

    .cert-portrait {
        width: 60%;
        max-width: 180px;
        height: auto;
        aspect-ratio: 3 / 4;
        left: auto;
        top: auto;
        right: auto;
        transform: none;
    }

    .cert-landscape img,
    .cert-portrait img {
        object-fit: contain;
        background: #F3F4F6;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }

    .site-logo img {
        height: 44px;
    }

    .site-logo-text {
        font-size: 18px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .section-header h2,
    .test-section-title h2,
    .subpage-header h1 {
        font-size: 24px;
    }

    .test-window-wrapper {
        padding: var(--space-sm);
    }

    .test-window-wrapper iframe {
        min-height: 600px;
    }

    .mobile-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow-lg);
        padding: var(--space-md);
        flex-direction: column;
        align-items: stretch;
        z-index: 999;
    }

    .main-nav.open {
        display: flex;
    }

    .nav-menu {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: var(--space-md);
        background-color: var(--color-gray-50);
        border-radius: var(--radius-md);
        margin-top: var(--space-xs);
        display: none;
    }

    .nav-item:hover .dropdown-menu,
    .nav-item:focus-within .dropdown-menu {
        display: block;
    }
}

@media (max-width: 480px) {
    .hero-badges {
        flex-direction: column;
        align-items: center;
    }

    .hero-badge {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .features-grid,
    .tests-grid,
    .cert-steps {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Auth Pages (Login / Register)
   ======================================== */
.auth-page {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-md);
    background: linear-gradient(135deg, #FFF5E6 0%, #E8F8F5 50%, #EBF5FB 100%);
    min-height: 0;
}

.auth-container {
    width: 100%;
    max-width: 440px;
}

.auth-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--color-orange), var(--color-blue), var(--color-green));
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.auth-icon {
    font-size: 48px;
    margin-bottom: var(--space-sm);
}

.auth-header h1 {
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--color-gray-900);
    margin-bottom: var(--space-xs);
}

.auth-header p {
    color: var(--color-gray-500);
    font-size: 15px;
}

.auth-form .form-group {
    margin-bottom: var(--space-lg);
}

.auth-form label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: var(--color-gray-700);
    margin-bottom: var(--space-sm);
}

.auth-form input[type="email"],
.auth-form input[type="password"],
.auth-form input[type="text"],
.auth-form input[type="number"],
.auth-form input[type="tel"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 15px;
    color: var(--color-gray-900);
    transition: all var(--transition-fast);
    background: var(--color-gray-50);
}

.auth-form input:focus {
    outline: none;
    border-color: var(--color-blue);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.15);
}

.auth-form input.error {
    border-color: var(--color-red);
    background: #FFF5F5;
}

.auth-form input.success {
    border-color: var(--color-green);
    background: #F0FFF4;
}

.auth-form .field-feedback {
    display: block;
    font-size: 13px;
    margin-top: 6px;
    padding-left: 4px;
    line-height: 1.4;
}

.auth-form .field-feedback.error {
    color: var(--color-red);
}

.auth-form .field-feedback.success {
    color: var(--color-green-dark);
}

.auth-form .field-feedback.checking {
    color: var(--color-gray-500);
}

.auth-form .input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.auth-form .code-input {
    letter-spacing: 8px;
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    font-family: 'Courier New', monospace;
}

.auth-form .form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.auth-form .checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 14px;
    color: var(--color-gray-700);
    cursor: pointer;
    font-weight: 400;
    margin-bottom: 0;
}

.auth-form .checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-green);
    cursor: pointer;
}

.auth-form .forgot-link {
    font-size: 14px;
    color: var(--color-blue);
    font-weight: 500;
}

.auth-form .forgot-link:hover {
    color: var(--color-blue-dark);
    text-decoration: underline;
}

.auth-form .btn-full {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: var(--space-lg) 0;
    color: var(--color-gray-500);
    font-size: 13px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-gray-200);
}

.auth-divider span {
    padding: 0 var(--space-md);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 14px;
    color: var(--color-gray-500);
}

.auth-footer a {
    color: var(--color-blue);
    font-weight: 600;
}

.auth-footer a:hover {
    color: var(--color-blue-dark);
    text-decoration: underline;
}

.resend-code {
    text-align: center;
    margin-top: var(--space-md);
}

.resend-code button {
    background: none;
    border: none;
    color: var(--color-blue);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: var(--font-main);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.resend-code button:hover:not(:disabled) {
    background: var(--color-blue-light);
    text-decoration: underline;
}

.resend-code button:disabled {
    color: var(--color-gray-300);
    cursor: not-allowed;
}

/* Toast notification for auth messages */
.auth-toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--color-white);
    padding: 12px 24px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    font-weight: 500;
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.auth-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.auth-toast.success {
    background: var(--color-green);
    color: white;
}

.auth-toast.error {
    background: var(--color-red);
    color: white;
}

/* My Account dropdown in nav */
.nav-item.account-dropdown .nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.nav-item.account-dropdown .dropdown-menu {
    right: 0;
    left: auto;
    min-width: 210px;
}

.nav-item.account-dropdown .dropdown-menu .dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-item.account-dropdown .dropdown-menu .dropdown-item:hover {
    background-color: var(--color-green-light);
    color: var(--color-green-dark);
}

.nav-item.account-dropdown .dropdown-menu .dropdown-item.logout-link:hover {
    background-color: var(--color-red-light);
    color: var(--color-red-dark);
}

.nav-item.account-dropdown .user-greeting {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-gray-200);
    font-size: 13px;
    color: var(--color-gray-500);
}

.nav-item.account-dropdown .user-greeting strong {
    display: block;
    color: var(--color-gray-900);
    font-size: 15px;
    margin-bottom: 2px;
}

/* Login button in nav (not logged in state) */
.btn-login-nav {
    background: var(--color-green) !important;
    color: var(--color-white) !important;
    border-radius: var(--radius-full) !important;
    padding: 8px 18px !important;
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
}

.btn-login-nav:hover {
    background: var(--color-green-dark, #1e8449) !important;
    color: var(--color-white) !important;
}

/* --- Dashboard Styles --- */
.dashboard-welcome {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.dashboard-welcome h1 {
    font-size: 32px;
    color: var(--color-gray-900);
    margin-bottom: var(--space-sm);
}

.dashboard-welcome p {
    font-size: 16px;
    color: var(--color-gray-500);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.dashboard-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-100);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--color-gray-900);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.dashboard-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-blue);
}

.dashboard-card .card-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
}

.dashboard-card h3 {
    font-size: 18px;
    margin-bottom: var(--space-xs);
    color: var(--color-gray-900);
}

.dashboard-card p {
    font-size: 13px;
    color: var(--color-gray-500);
    margin: 0;
    line-height: 1.5;
}

.dashboard-card.orange:hover { border-color: var(--color-orange); }
.dashboard-card.blue:hover { border-color: var(--color-blue); }
.dashboard-card.green:hover { border-color: var(--color-green); }
.dashboard-card.purple:hover { border-color: #9B59B6; }
.dashboard-card.red:hover { border-color: var(--color-red); }
.dashboard-card.teal:hover { border-color: #1ABC9C; }

.dashboard-sections {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.dashboard-section {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 2px solid var(--color-gray-100);
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
}

.dashboard-section h2 {
    font-size: 20px;
    color: var(--color-blue-dark);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-gray-100);
}

.dashboard-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.dashboard-form .form-group {
    margin-bottom: var(--space-md);
}

.dashboard-form label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: var(--color-gray-700);
    margin-bottom: var(--space-xs);
}

.dashboard-form input,
.dashboard-form select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 14px;
    color: var(--color-gray-900);
    background: var(--color-gray-50);
    transition: all var(--transition-fast);
    box-sizing: border-box;
}

.dashboard-form input:focus,
.dashboard-form select:focus {
    outline: none;
    border-color: var(--color-blue);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.15);
}

.dashboard-form input.error {
    border-color: var(--color-red);
    background: #FFF5F5;
}

.dashboard-form .form-feedback {
    display: block;
    font-size: 12px;
    margin-top: 4px;
    padding-left: 4px;
}

.dashboard-form .form-feedback.error {
    color: var(--color-red);
}

.dashboard-form .form-feedback.success {
    color: var(--color-green-dark);
}

.dashboard-form .btn-save {
    width: 25%;
    margin-top: var(--space-sm);
}

@media (max-width: 768px) {
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
    .dashboard-form .form-row {
        grid-template-columns: 1fr;
    }
}

/* --- Account Sidebar Layout --- */
.account-layout {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-xl) 0;
    flex: 1;
}

.account-sidebar {
    min-width: 220px;
    flex-shrink: 0;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-100);
    box-shadow: var(--shadow-sm);
    padding: var(--space-md);
    height: fit-content;
    position: sticky;
    top: var(--space-md);
}

.account-sidebar .menu-header {
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-gray-100);
}

.account-sidebar .menu-header strong {
    font-size: 16px;
    color: var(--color-gray-900);
}

.account-sidebar .menu-header span {
    display: block;
    font-size: 12px;
    color: var(--color-gray-500);
    margin-top: 2px;
}

.account-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.account-menu li {
    margin: 0;
}

.account-menu a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px var(--space-md);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.account-menu a:hover {
    background: var(--color-blue-light);
    color: var(--color-blue-dark);
}

.account-menu a.active {
    background: var(--color-blue);
    color: var(--color-white);
    font-weight: 600;
}

.account-content {
    flex: 1;
    min-width: 0;
}

/* --- Practice/Exam Table --- */
.records-toolbar {
    display: flex;
    gap: var(--space-md);
    align-items: flex-end;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.records-toolbar .toolbar-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.records-toolbar label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-500);
}

.records-toolbar input,
.records-toolbar select {
    padding: 8px 12px;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--color-gray-900);
    background: var(--color-white);
    font-family: var(--font-main);
}

.records-toolbar input:focus,
.records-toolbar select:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.15);
}

/* --- Records Table (standard HTML <table>) --- */
.records-table-wrap {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-100);
    box-shadow: var(--shadow-sm);
    overflow-x: auto;
}

table.records-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    color: var(--color-gray-900);
    table-layout: auto;
}

table.records-table thead th {
    background: var(--color-gray-50);
    border-bottom: 2px solid var(--color-gray-100);
    padding: 10px 12px;
    text-align: left;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

table.records-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

table.records-table tbody tr:hover {
    background: var(--color-gray-50);
}

table.records-table tbody tr:last-child td {
    border-bottom: none;
}

/* Title 列：允许收缩截断 */
table.records-table td.cell-ellipsis,
table.records-table th:nth-child(2) {
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Actions 列：按钮排列 */
table.records-table td.cell-actions {
    white-space: nowrap;
}
table.records-table td.cell-actions .btn {
    margin-right: 4px;
    margin-bottom: 2px;
}

/* 状态徽章 */
.records-table .status-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
}
.status-badge.status-0 { background: #FFF3CD; color: #856404; }
.status-badge.status-1 { background: #D4EDDA; color: #155724; }
.status-badge.status-2 { background: #F8D7DA; color: #721C24; }
.status-badge.status-3 { background: var(--color-gray-200); color: var(--color-gray-500); }
.status-badge.status-4 { background: #E0E7FF; color: #3730A3; }

/* 空状态 */
table.records-table td.table-empty {
    padding: 48px 16px;
    text-align: center;
    color: var(--color-gray-500);
    font-size: 15px;
}
.records-table .table-empty .empty-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
}

/* 辅助文本类 */
.records-table .muted {
    color: var(--color-gray-400);
    font-size: 12px;
}
.records-table .link-green {
    font-size: 12px;
    color: var(--color-green);
    text-decoration: none;
}
.records-table .link-green:hover { text-decoration: underline; }
.records-table .link-blue {
    font-size: 12px;
    color: var(--color-blue);
    text-decoration: none;
}
.records-table .link-blue:hover { text-decoration: underline; }

/* 小按钮 */
.btn.btn-sm {
    padding: 3px 10px;
    font-size: 12px;
    border-radius: var(--radius-md);
    text-decoration: none;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: opacity 0.15s;
}
.btn.btn-sm:hover { opacity: 0.85; }
.btn.btn-orange {
    background: linear-gradient(135deg, #F59E0B, #D97706);
    color: #fff;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-lg);
}

.pagination button {
    min-width: 36px;
    height: 36px;
    border: 2px solid var(--color-gray-200);
    background: var(--color-white);
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--color-blue);
    color: var(--color-blue);
}

.pagination button.active {
    background: var(--color-blue);
    color: var(--color-white);
    border-color: var(--color-blue);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination .page-info {
    font-size: 13px;
    color: var(--color-gray-500);
    margin: 0 var(--space-sm);
}

/* Dashboard charts placeholder */
.dashboard-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.chart-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-gray-100);
    box-shadow: var(--shadow-sm);
    padding: var(--space-xl);
    text-align: center;
}

.chart-card h3 {
    font-size: 16px;
    color: var(--color-gray-900);
    margin-bottom: var(--space-md);
}

.chart-card .chart-placeholder {
    padding: var(--space-2xl) var(--space-md);
    color: var(--color-gray-500);
    font-size: 14px;
}

.chart-card .chart-placeholder .placeholder-icon {
    font-size: 64px;
    margin-bottom: var(--space-md);
}

.level-ladder {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: var(--space-xs);
    height: 180px;
    padding: var(--space-md);
}

.level-ladder .level-bar {
    width: 40px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: var(--space-xs);
    font-size: 11px;
    font-weight: 700;
    color: var(--color-white);
    position: relative;
}

.level-ladder .level-bar.current::after {
    content: '★';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 16px;
    color: var(--color-orange);
}

.radar-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .account-layout {
        flex-direction: column;
    }
    .account-sidebar {
        width: 100%;
        position: static;
    }
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
    /* 小屏表格：纵向滚动条 + 隐藏次要列 */
    table.records-table th:nth-child(1),
    table.records-table td:nth-child(1),
    table.records-table th:nth-child(6),
    table.records-table td:nth-child(6),
    table.records-table th:nth-child(7),
    table.records-table td:nth-child(7),
    table.records-table th:nth-child(8),
    table.records-table td:nth-child(8) {
        display: none;
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: var(--space-xl);
    }

    .auth-header h1 {
        font-size: 24px;
    }

    .auth-form .input-row {
        grid-template-columns: 1fr;
    }
}