* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-gradient-1: #0f0c29;
    --bg-gradient-2: #302b63;
    --bg-gradient-3: #24243e;
    --card-bg: rgba(255, 255, 255, 0.08);
    --card-border: rgba(255, 255, 255, 0.15);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --accent-gold: #ffd700;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --btn-gradient-1: #667eea;
    --btn-gradient-2: #764ba2;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 50%, var(--bg-gradient-3) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.app-container {
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-header {
    text-align: center;
}

.app-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-pink) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(255, 215, 0, 0.3);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 4px;
    letter-spacing: 1px;
}

.quote-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.quote-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 32px 24px;
    position: relative;
    min-height: 220px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.quote-card:active {
    transform: scale(0.98);
}

.quote-content {
    position: relative;
    text-align: center;
    padding: 0 16px;
}

.quote-mark {
    font-family: Georgia, serif;
    font-size: 4rem;
    color: var(--accent-gold);
    opacity: 0.4;
    position: absolute;
    line-height: 1;
}

.quote-mark:first-of-type {
    top: -20px;
    left: -8px;
}

.quote-mark.closing {
    bottom: -40px;
    right: -8px;
}

.quote-text {
    font-size: 1.15rem;
    line-height: 1.7;
    font-weight: 400;
    color: var(--text-primary);
    font-style: italic;
    transition: opacity 0.3s ease;
}

.quote-meta {
    margin-top: 24px;
    text-align: center;
}

.quote-author {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-gold);
    margin-bottom: 4px;
}

.quote-book {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.favorite-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    transition: transform 0.2s ease;
}

.favorite-btn:active {
    transform: scale(1.2);
}

.star-icon {
    width: 28px;
    height: 28px;
    color: var(--text-secondary);
    transition: color 0.3s ease, fill 0.3s ease;
}

.favorite-btn.active .star-icon {
    color: var(--accent-gold);
    fill: var(--accent-gold);
}

.action-buttons {
    display: flex;
    gap: 12px;
}

.primary-btn {
    flex: 2;
    background: linear-gradient(135deg, var(--btn-gradient-1) 0%, var(--btn-gradient-2) 100%);
    border: none;
    border-radius: 16px;
    padding: 18px 24px;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-btn:active {
    transform: scale(0.96);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

.btn-icon {
    font-size: 1.3rem;
}

.copy-btn,
.share-btn {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.2s ease, background 0.2s ease;
}

.copy-btn {
    flex: 0;
    padding: 18px 20px;
}

.share-btn {
    flex: 1;
}

.copy-btn:active,
.share-btn:active {
    transform: scale(0.96);
    background: rgba(255, 255, 255, 0.12);
}

.copy-btn.copied {
    background: rgba(34, 197, 94, 0.2);
    border-color: rgba(34, 197, 94, 0.5);
}

.copy-btn.downloaded {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.5);
}

.copy-btn svg,
.share-btn svg {
    width: 20px;
    height: 20px;
}

.app-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    opacity: 0.6;
}

/* Quote card background colors */
.quote-card.bg-1 {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
}

.quote-card.bg-2 {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(16, 185, 129, 0.15) 100%);
}

.quote-card.bg-3 {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(239, 68, 68, 0.15) 100%);
}

.quote-card.bg-4 {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(236, 72, 153, 0.15) 100%);
}

.quote-card.bg-5 {
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
}

/* Loading animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading .quote-text {
    animation: pulse 1.5s infinite;
}

/* Responsive */
@media (max-width: 380px) {
    .app-header h1 {
        font-size: 1.8rem;
    }
    
    .quote-text {
        font-size: 1rem;
    }
    
    .quote-card {
        padding: 24px 20px;
        min-height: 200px;
    }
    
    .primary-btn {
        padding: 16px 20px;
        font-size: 1rem;
    }
}

@media (min-height: 800px) {
    .quote-card {
        min-height: 280px;
    }
}

/* Image Modal */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.image-modal.show {
    display: flex;
}

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

.modal-content img {
    max-width: 100%;
    max-height: 60vh;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.modal-hint {
    color: var(--text-secondary);
    margin-top: 16px;
    font-size: 0.9rem;
}

.close-modal-btn {
    margin-top: 20px;
    background: var(--btn-gradient-1);
    border: none;
    color: white;
    padding: 12px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}