/* WeChat Emoji Detail Page Styles */
/* Dedicated CSS file to avoid conflicts with main site styles */

/* ==========================================================================
   CSS Variables and Reset
   ========================================================================== */

:root {
    /* Essential Colors */
    --primary-color: #ff0050;
    --primary-hover: #e6004c;
    --secondary-color: #00f2ea;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    
    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --text-inverse: #ffffff;
    
    /* Border Colors */
    --border-primary: #dee2e6;
    --border-secondary: #e9ecef;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-modal: 1050;
    --z-toast: 1100;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    font: inherit;
    cursor: pointer;
}

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

/* ==========================================================================
   Header Navigation Styles
   ========================================================================== */

.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
    color: var(--primary-color);
}

.logo__icon {
    font-size: var(--font-size-xl);
}

.logo__image {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.logo__text {
    display: none;
}

@media (min-width: 640px) {
    .logo__text {
        display: block;
    }
}

/* Navigation Menu */
.nav__menu {
    display: none;
}

@media (min-width: 768px) {
    .nav__menu {
        display: block;
        position: static;
        transform: none;
        width: auto;
        height: auto;
        background: transparent;
        box-shadow: none;
        border: none;
        padding: 0;
    }
}

.menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    margin: 0;
    padding: 0;
    align-items: center;
    white-space: nowrap;
}

@media (max-width: 1200px) {
    .menu {
        gap: var(--spacing-sm);
    }
    
    .menu__link {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 1000px) {
    .menu {
        gap: var(--spacing-xs);
    }
    
    .menu__link {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* Dropdown Navigation */
.menu__item--dropdown {
    position: relative;
}

.menu__dropdown-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.menu__dropdown-toggle:hover {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.menu__dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: var(--z-dropdown);
}

.menu__item--dropdown:hover .menu__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

.menu__dropdown-item {
    margin: 0;
}

.menu__dropdown-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}

.menu__dropdown-link:hover {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.menu__link {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.menu__link:hover {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
    text-decoration: none;
}

/* Mobile Menu Toggle */
.nav__toggle {
    display: block;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    background-color: white;
    border: 1px solid #e5e7eb;
    transition: all var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    min-width: 38px;
    min-height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav__toggle:hover {
    color: var(--primary-color);
    background-color: #f9fafb;
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
    .nav__toggle {
        display: none;
    }
}

/* Hamburger Icon */
.hamburger {
    width: 18px;
    height: 14px;
    position: relative;
    cursor: pointer;
}

.hamburger::before,
.hamburger::after,
.hamburger {
    background: currentColor;
    border-radius: 1px;
    height: 2px;
    transition: all 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    left: 0;
}

.hamburger::before {
    top: 0;
}

.hamburger::after {
    bottom: 0;
}

/* ==========================================================================
   Footer Styles
   ========================================================================== */

.footer {
    background-color: #2c3e50;
    color: var(--text-inverse);
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--text-inverse);
}

.footer__description {
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
}

.footer__subtitle {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--text-inverse);
}

.footer__links {
    list-style: none;
    padding: 0;
}

.footer__links li {
    margin-bottom: var(--spacing-sm);
}

.footer__links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--text-inverse);
    text-decoration: none;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer__copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer__disclaimer {
    margin-top: var(--spacing-lg);
    text-align: left;
}

.disclaimer__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.disclaimer__text {
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-sm);
}

/* Container and Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
    box-sizing: border-box;
}

.emoji-detail {
    padding: 2rem 0;
    min-height: 70vh;
}

.emoji-detail__wrapper {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
}

.emoji-detail__content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
    width: 100%;
    box-sizing: border-box;
}

/* Breadcrumb Navigation */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    font-size: 0.9rem;
}

.breadcrumb__link {
    color: #6b7280;
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb__link:hover {
    color: #ff0050;
}

.breadcrumb__separator {
    color: #9ca3af;
}

.breadcrumb__current {
    color: #ff0050;
    font-weight: 600;
}

/* Emoji Display Section */
.emoji-display {
    text-align: center;
    background: white;
    border-radius: 16px;
    padding: 3rem 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e5e7eb;
}

.emoji-display__image {
    margin-bottom: 2rem;
}

.emoji-large {
    width: 128px;
    height: 128px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.emoji-display__title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #1f2937;
}

.emoji-display__shortcode {
    font-size: 1.25rem;
    color: #6b7280;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background: #f3f4f6;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    display: inline-block;
    margin-bottom: 2rem;
}

/* Action Buttons */
.emoji-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.btn--primary {
    background: #ff0050;
    color: white;
}

.btn--primary:hover {
    background: #e6004c;
    transform: translateY(-2px);
}

.btn--accent {
    background: #8b5cf6;
    color: white;
}

.btn--accent:hover {
    background: #7c3aed;
    transform: translateY(-2px);
}

/* Platform Versions Section */
.platform-versions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 3rem auto;
    max-width: 700px;
}

.platform-version {
    text-align: center;
    padding: 2rem;
    background: #f8f9ff;
    border-radius: 16px;
    border: 2px solid #e2e8f0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.platform-version:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.platform-version h3 {
    margin: 0 0 1.5rem 0;
    color: #4a5568;
    font-size: 1.25rem;
    font-weight: 600;
}

.platform-version img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 12px;
    background: white;
    padding: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.platform-version p {
    margin: 1.5rem 0 0 0;
    font-size: 0.9rem;
    color: #6b7280;
    font-weight: 500;
}

/* WeChat Usage Guide */
.wechat-usage {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px solid #bae6fd;
    border-radius: 16px;
    padding: 2rem;
    margin: 3rem auto;
    max-width: 700px;
}

.wechat-usage h3 {
    color: #0369a1;
    margin: 0 0 1.5rem 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.usage-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: step-counter;
}

.usage-steps li {
    padding: 1rem 0;
    position: relative;
    padding-left: 3rem;
    counter-increment: step-counter;
    font-size: 1rem;
    line-height: 1.6;
    color: #374151;
}

.usage-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 1rem;
    background: #0369a1;
    color: white;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: bold;
}

/* Emoji Information Section */
.emoji-info {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin: 3rem auto;
    max-width: 700px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e5e7eb;
}

.emoji-info__section {
    margin-bottom: 2rem;
}

.emoji-info__section:last-child {
    margin-bottom: 0;
}

.emoji-info__title {
    font-size: 1.875rem;
    font-weight: bold;
    color: #1f2937;
    margin-bottom: 1rem;
}

.emoji-info__subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    color: #374151;
    margin: 1.5rem 0 1rem 0;
}

.emoji-info__description {
    color: #6b7280;
    line-height: 1.7;
    font-size: 1rem;
}

.emoji-info__platforms {
    background: #f3f4f6;
    padding: 1rem;
    border-radius: 8px;
    color: #4b5563;
    line-height: 1.6;
    font-size: 0.95rem;
}

.emoji-info__examples {
    list-style: none;
    padding: 0;
    margin: 0;
}

.emoji-info__examples li {
    background: #f9fafb;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border-left: 4px solid #ff0050;
    color: #374151;
    font-size: 0.95rem;
}

.emoji-info__examples li:last-child {
    margin-bottom: 0;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    padding: 1rem 1.5rem;
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    max-width: 320px;
}

.toast.show {
    transform: translateX(0);
}

.toast__content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toast__message {
    flex: 1;
    font-size: 0.9rem;
    color: #374151;
}

.toast__close {
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.toast__close:hover {
    color: #6b7280;
    background: #f3f4f6;
}

/* ==========================================================================
   Related Emojis Section
   ========================================================================== */

.related-emojis {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl) var(--spacing-xl);
    margin: var(--spacing-3xl) auto 0;
    max-width: 900px;
}

.related-emojis__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.related-emojis__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.related-emoji-card {
    background: white;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.related-emoji-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.related-emoji-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
    text-decoration: none;
}

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

.related-emoji-card__image {
    width: 64px;
    height: 64px;
    object-fit: contain;
    margin: 0 auto var(--spacing-md);
    display: block;
}

.related-emoji-card__name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.related-emoji-card__code {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background: var(--bg-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    display: inline-block;
}

.related-emojis__view-all {
    text-align: center;
}

.related-emojis__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
}

.related-emojis__link:hover {
    background: var(--primary-hover);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 0, 80, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .emoji-detail__content {
        padding: 1rem 0;
    }
    
    .emoji-display {
        padding: 2rem 1rem;
        margin-bottom: 2rem;
    }
    
    .emoji-large {
        width: 96px;
        height: 96px;
    }
    
    .emoji-display__title {
        font-size: 2rem;
    }
    
    .platform-versions {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin: 2rem auto;
    }
    
    .platform-version {
        padding: 1.5rem;
    }
    
    .platform-version img {
        width: 100px;
        height: 100px;
    }
    
    .wechat-usage, .emoji-info {
        margin: 2rem auto;
        padding: 1.5rem;
    }
    
    .emoji-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        justify-content: center;
        padding: 1rem 1.5rem;
    }
    
    .toast {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
    
    /* Related Emojis Mobile */
    .related-emojis {
        padding: var(--spacing-2xl) var(--spacing-md);
        margin: var(--spacing-2xl) auto 0;
    }
    
    .related-emojis__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .related-emoji-card {
        padding: var(--spacing-md);
    }
    
    .related-emoji-card__image {
        width: 48px;
        height: 48px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .emoji-display {
        padding: 1.5rem 0.75rem;
    }
    
    .emoji-display__title {
        font-size: 1.75rem;
    }
    
    .platform-version img {
        width: 80px;
        height: 80px;
    }
    
    .wechat-usage, .emoji-info {
        padding: 1rem;
    }
    
    .usage-steps li {
        padding-left: 2.5rem;
        font-size: 0.9rem;
    }
    
    .usage-steps li::before {
        width: 1.5rem;
        height: 1.5rem;
        font-size: 0.75rem;
    }
    
    /* Related Emojis Small Mobile */
    .related-emojis__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .related-emoji-card {
        padding: var(--spacing-sm);
    }
    
    .related-emoji-card__image {
        width: 40px;
        height: 40px;
        margin-bottom: var(--spacing-sm);
    }
    
    .related-emoji-card__name {
        font-size: var(--font-size-sm);
    }
    
    .related-emoji-card__code {
        font-size: var(--font-size-xs);
        padding: 2px var(--spacing-xs);
    }
}