/* style.css */
/* Premium Design System for Bible Flashcards Web App */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;600;700&family=Outfit:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    /* Color Palette - Dawn Theme (Light Mode Default) */
    --bg-gradient-1: #eef2f7;
    --bg-gradient-2: #dfe9f3;
    --bg-gradient-3: #fcf1e8;
    
    --card-bg: rgba(255, 255, 255, 0.75);
    --card-border: rgba(255, 255, 255, 0.6);
    --card-shadow: 0 20px 50px rgba(31, 38, 135, 0.08);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: rgba(99, 102, 241, 0.1);
    --accent-gold: #d97706;
    
    --category-bg: rgba(255, 255, 255, 0.9);
    --btn-bg: #ffffff;
    --btn-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    
    --glass-blur: 20px;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-gradient-1: #090a15;
    --bg-gradient-2: #12142c;
    --bg-gradient-3: #0f101d;
    
    --card-bg: rgba(20, 22, 45, 0.65);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --accent-color: #818cf8;
    --accent-hover: #6366f1;
    --accent-light: rgba(129, 140, 248, 0.15);
    --accent-gold: #f59e0b;
    
    --category-bg: rgba(15, 23, 42, 0.6);
    --btn-bg: #1e293b;
    --btn-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
    background: linear-gradient(135deg, var(--bg-gradient-1), var(--bg-gradient-2), var(--bg-gradient-3));
    background-size: 300% 300%;
    animation: gradientShift 20s ease infinite;
}

/* Dynamic Aura Background Animation */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Decorative Background Blobs */
.bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.45;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.bg-blob-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    left: -100px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, rgba(99, 102, 241, 0) 70%);
}

.bg-blob-2 {
    width: 500px;
    height: 500px;
    bottom: -150px;
    right: -100px;
    background: radial-gradient(circle, rgba(217, 119, 6, 0.35) 0%, rgba(217, 119, 6, 0) 70%);
}

[data-theme="dark"] .bg-blob-1 {
    background: radial-gradient(circle, rgba(129, 140, 248, 0.25) 0%, rgba(129, 140, 248, 0) 70%);
}
[data-theme="dark"] .bg-blob-2 {
    background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, rgba(245, 158, 11, 0) 70%);
}

/* Header Styles */
header {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-color), #ec4899);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.25);
    transition: var(--transition-smooth);
}

.logo:hover .logo-icon {
    transform: rotate(10deg) scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Button Base Class */
.icon-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background: var(--btn-bg);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--btn-shadow);
    transition: var(--transition-smooth);
    position: relative;
    outline: none;
}

.icon-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.icon-btn:active {
    transform: translateY(0);
}

/* Tooltip */
.icon-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: -36px;
    left: 50%;
    transform: translateX(-50%) scale(0.85);
    background: rgba(15, 23, 42, 0.9);
    color: white;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    z-index: 100;
}

.icon-btn:hover::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* Main Layout Container */
main {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    z-index: 5;
}

/* Category Filter Chips Container */
.categories-container {
    width: 100%;
    max-width: 800px;
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 8px 4px;
}

.category-chip {
    padding: 10px 20px;
    border-radius: 100px;
    border: 1px solid var(--card-border);
    background: var(--category-bg);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    white-space: nowrap;
    box-shadow: var(--btn-shadow);
    transition: var(--transition-smooth);
}

.category-chip:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.category-chip.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 6px 15px rgba(99, 102, 241, 0.3);
}

/* Mode Switcher Layout */
.view-modes {
    display: flex;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 4px;
    border-radius: 100px;
    margin-bottom: 24px;
    box-shadow: var(--btn-shadow);
}

.mode-btn {
    padding: 8px 18px;
    border-radius: 100px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-smooth);
}

.mode-btn.active {
    background: var(--btn-bg);
    color: var(--accent-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* Flashcard Container and Wrapper */
.card-wrapper {
    perspective: 1500px; /* Crucial for 3D Flip */
    width: 100%;
    max-width: 650px;
    height: 380px;
    margin-bottom: 30px;
    position: relative;
    cursor: pointer;
}

/* Card deal animations and state switches */
.card-wrapper.dealing {
    animation: dealCard 0.6s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}

@keyframes dealCard {
    0% {
        opacity: 0;
        transform: translateY(50px) rotate(-3deg) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(0) scale(1);
    }
}

/* Flashcard actual component */
.flashcard {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.2);
}

/* When flipped, rotate Y axis */
.flashcard.flipped {
    transform: rotateY(180deg);
}

/* Two faces of the card */
.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden; /* Hide the back when flipped */
    -webkit-backface-visibility: hidden;
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 28px;
    padding: 36px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
}

.card-back {
    transform: rotateY(180deg); /* Position card-back correctly for the flip */
}

/* Interactive Ripple on Card Click */
.card-face::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

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

/* Card Content Elements */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 12px;
}

.verse-category-badge {
    padding: 6px 14px;
    background: var(--accent-light);
    color: var(--accent-color);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.card-controls {
    display: flex;
    gap: 8px;
    /* Stops click events from propagating to card and triggering flip */
    z-index: 20;
}

.verse-body {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

/* Decorative Big Quotes */
.quote-icon {
    position: absolute;
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 8rem;
    color: var(--accent-color);
    opacity: 0.05;
    line-height: 1;
    pointer-events: none;
}

.quote-left {
    top: -20px;
    left: -15px;
}

.quote-right {
    bottom: -60px;
    right: -10px;
}

/* Text Stylings */
.verse-text-zh {
    font-family: 'Noto Serif TC', 'Songti TC', serif;
    font-weight: 600;
    font-size: 1.55rem;
    line-height: 1.6;
    margin-bottom: 16px;
    color: var(--text-primary);
    word-break: break-all;
}

.verse-text-en {
    font-family: 'Playfair Display', 'Georgia', serif;
    font-weight: 400;
    font-size: 1.15rem;
    line-height: 1.55;
    font-style: italic;
    color: var(--text-secondary);
}

/* Bilingual Side-by-Side/Dual Text mode custom styling */
.bilingual-card .verse-text-zh {
    font-size: 1.45rem;
    margin-bottom: 12px;
}

.bilingual-card .verse-text-en {
    font-size: 1.05rem;
}

/* Flip Hint Indicator */
.flip-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 10px;
    animation: floatHint 2s ease-in-out infinite;
}

@keyframes floatHint {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    width: 100%;
    margin-top: 10px;
}

.verse-reference {
    display: flex;
    flex-direction: column;
}

.ref-book {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: -0.2px;
}

.ref-chapter {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 2px;
}

/* Audio wave animation when TTS is active */
.audio-wave {
    display: none;
    align-items: flex-end;
    gap: 2px;
    width: 20px;
    height: 15px;
    margin-left: 8px;
}

.audio-wave.active {
    display: inline-flex;
}

.audio-bar {
    width: 3px;
    background-color: var(--accent-color);
    border-radius: 3px;
    animation: waveBounce 0.8s ease-in-out infinite alternate;
}

.audio-bar:nth-child(1) { height: 100%; animation-delay: 0.1s; }
.audio-bar:nth-child(2) { height: 60%; animation-delay: 0.3s; }
.audio-bar:nth-child(3) { height: 80%; animation-delay: 0.2s; }
.audio-bar:nth-child(4) { height: 40%; animation-delay: 0.4s; }

@keyframes waveBounce {
    0% { transform: scaleY(0.3); }
    100% { transform: scaleY(1); }
}

/* Primary Controller Buttons - Next, Refresh, Saved */
.main-controllers {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.action-btn-primary {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 100px;
    border: none;
    background: linear-gradient(135deg, var(--accent-color), #4f46e5);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.35);
    transition: var(--transition-smooth);
}

.action-btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.45);
}

.action-btn-primary:active {
    transform: translateY(-1px);
}

.action-btn-secondary {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 100px;
    border: 1px solid var(--card-border);
    background: var(--btn-bg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: var(--btn-shadow);
    transition: var(--transition-smooth);
}

.action-btn-secondary:hover {
    transform: translateY(-3px) scale(1.02);
    border-color: var(--accent-color);
    color: var(--accent-color);
    box-shadow: 0 10px 20px rgba(0,0,0,0.06);
}

.action-btn-secondary:active {
    transform: translateY(-1px);
}

.action-btn-primary svg {
    transition: transform 0.5s ease;
}

.action-btn-primary:hover svg {
    transform: rotate(180deg);
}

/* Modals & Panels Styles (Favorites & Add Verses) */
.panel-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    justify-content: flex-end; /* Slide in from right */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.panel-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.side-panel {
    width: 100%;
    max-width: 480px;
    height: 100%;
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-left: 1px solid var(--card-border);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
    padding: 36px;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    color: var(--text-primary);
}

.panel-backdrop.active .side-panel {
    transform: translateX(0);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.panel-title {
    font-size: 1.4rem;
    font-weight: 700;
}

/* Scrollable Container inside side panel */
.panel-body {
    flex: 1;
    overflow-y: auto;
    margin-right: -10px;
    padding-right: 10px;
}

.panel-body::-webkit-scrollbar {
    width: 6px;
}

.panel-body::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 10px;
    opacity: 0.3;
}

/* Favorites List Items */
.fav-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.fav-item {
    background: rgba(255,255,255,0.4);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 16px;
    transition: var(--transition-smooth);
    position: relative;
    cursor: pointer;
}

[data-theme="dark"] .fav-item {
    background: rgba(15, 23, 42, 0.3);
}

.fav-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--btn-shadow);
    border-color: var(--accent-color);
}

.fav-text-zh {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.fav-text-en {
    font-size: 0.85rem;
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 8px;
}

.fav-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-color);
}

.fav-delete-btn {
    border: none;
    background: transparent;
    color: #ef4444;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    opacity: 0.7;
    transition: var(--transition-smooth);
    padding: 4px 8px;
    border-radius: 4px;
}

.fav-delete-btn:hover {
    opacity: 1;
    background: rgba(239, 68, 68, 0.1);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Beautiful Form Customization */
.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background: var(--btn-bg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition-smooth);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-light);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    background: var(--accent-color);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
    transition: var(--transition-smooth);
    margin-top: 10px;
}

.submit-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(99, 102, 241, 0.35);
}

/* Footer Section */
footer {
    text-align: center;
    padding: 24px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    border-top: 1px solid var(--card-border);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

/* Notifications Toast style */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(8px);
    color: white;
    padding: 12px 24px;
    border-radius: 100px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s;
    opacity: 0;
    pointer-events: none;
}

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

/* Responsive Customization */
@media (max-width: 768px) {
    header {
        padding: 16px;
    }
    
    main {
        padding: 10px 16px;
    }
    
    .card-wrapper {
        height: 420px; /* Taller on mobile for longer verses */
    }
    
    .card-face {
        padding: 24px;
    }
    
    .verse-text-zh {
        font-size: 1.35rem;
    }
    
    .verse-text-en {
        font-size: 1rem;
    }
    
    .bilingual-card .verse-text-zh {
        font-size: 1.25rem;
    }
    
    .bilingual-card .verse-text-en {
        font-size: 0.95rem;
    }
    
    .side-panel {
        max-width: 100%;
    }
    
    .logo-subtitle {
        display: none;
    }
}

/* --- Calendar Mode Premium Styles --- */
.calendar-container {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 28px;
    padding: 30px;
    box-shadow: var(--card-shadow);
    margin-bottom: 40px;
    animation: dealCard 0.6s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.calendar-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    background: linear-gradient(90deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    text-align: center;
}

.day-name {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    padding-bottom: 10px;
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-day {
    aspect-ratio: 1 / 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid var(--card-border);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    transition: var(--transition-smooth);
    cursor: default;
}

[data-theme="dark"] .calendar-day {
    background: rgba(15, 23, 42, 0.2);
}

.calendar-day:not(.empty):hover {
    background: var(--btn-bg);
    transform: translateY(-2px);
    box-shadow: var(--btn-shadow);
}

.calendar-day.today {
    border-color: var(--accent-color);
    background: var(--accent-light);
    color: var(--accent-color);
}

.calendar-day.empty {
    background: transparent;
    border: none;
}

.verse-star {
    margin-top: 4px;
    color: var(--accent-gold);
    font-size: 1.2rem;
    cursor: pointer;
    filter: drop-shadow(0 0 5px rgba(217, 119, 6, 0.4));
    transition: var(--transition-smooth);
    animation: starPulse 2s infinite ease-in-out;
}

.verse-star:hover {
    transform: scale(1.3) rotate(15deg);
    filter: drop-shadow(0 0 8px rgba(217, 119, 6, 0.6));
}

@keyframes starPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

/* Responsive adjustment for small screens */
@media (max-width: 480px) {
    .calendar-container {
        padding: 15px;
    }
    .calendar-day {
        font-size: 0.8rem;
    }
    .verse-star {
        font-size: 0.9rem;
    }
}