/* ===== index.html page-specific styles ===== */

/* Hero (index variant) */
.hero {
    text-align: center;
    padding: 4rem 2rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Search Box */
.search-container {
    max-width: 600px;
    margin: 0 auto 2rem;
    position: relative;
}

.search-box {
    width: 100%;
    padding: 1.2rem 1.5rem 1.2rem 3.5rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    background: var(--card-bg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    outline: none;
}

.search-box:focus {
    box-shadow: var(--shadow-hover);
    transform: scale(1.02);
}

.search-icon {
    position: absolute;
    left: 1.3rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.3rem;
    color: var(--text-light);
}

/* Tags Section */
.tags-section {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 0 2rem;
}

.tags-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: 1.5rem;
    transition: color 0.3s ease;
}

.tags-toggle:hover { color: #c44cff; }

.tags-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.tags-toggle.open svg { transform: rotate(180deg); }

.tags-container {
    display: none;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.tags-container.open { display: flex; }

.tag {
    padding: 0.5rem 1.2rem;
    background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.tag:hover {
    border-color: #c44cff;
    transform: translateY(-2px);
}

.tag.active {
    background: var(--primary-gradient);
    color: white;
}

/* Main Content */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem 4rem;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.section-title .sparkle {
    display: inline-block;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Symbol Grid */
.symbol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.symbol-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.symbol-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.symbol-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.symbol-card:hover::before { opacity: 1; }

.symbol-content {
    font-size: 2.5rem;
    text-align: center;
    padding: 1rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 15px;
    word-break: break-all;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.symbol-name {
    font-weight: 600;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 0.5rem;
}

.symbol-category {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    color: #4338ca;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

.copy-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--primary-gradient);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.symbol-card.copied .copy-hint { opacity: 1; }

/* Load More */
.load-more-container {
    text-align: center;
    margin-top: 3rem;
}

.load-more-btn {
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

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

/* No Results */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* Loading Animation */
.loading {
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f0f0f0;
    border-top: 4px solid #c44cff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer (index extended) */
.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-copyright { color: var(--text-light); }

.friend-links {
    max-width: 1200px;
    margin: 1.5rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(113, 128, 150, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem 1.5rem;
    flex-wrap: wrap;
    color: var(--text-light);
    font-size: 0.95rem;
}

.friend-links span {
    font-weight: 700;
    color: var(--text-dark);
}

.friend-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.friend-links a:hover { color: #c44cff; }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .symbol-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}