/* ==========================================
   TEACHING CLOCK - STYLES
   ========================================== */

/* CSS Custom Properties (Default: Rainbow Theme) */
:root {
    /* Rainbow Theme (Default) */
    --clock-face: #ffffff;
    --clock-border: #ff6b6b;
    --clock-inner: #fff9f0;
    --hour-hand: #e63946;
    --minute-hand: #457b9d;
    --center-pin: #1d3557;
    --hour-markers: #333333;
    --minute-markers: #cccccc;
    --background: linear-gradient(135deg, #fff1eb 0%, #ace0f9 100%);
    --primary: #ff6b6b;
    --secondary: #4ecdc4;
    --accent: #ffe66d;
    --text: #2d3436;
    --text-light: #636e72;
    --card-bg: rgba(255, 255, 255, 0.9);
    --button-bg: #ffffff;
    --button-active: #ff6b6b;
    --success: #00b894;
    --celebration-colors: #ff6b6b, #ffe66d, #4ecdc4, #a29bfe, #fd79a8;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================
   THEME: SPACE
   ========================================== */
[data-theme="space"] {
    --clock-face: #1a1a2e;
    --clock-border: #ffd700;
    --clock-inner: #16213e;
    --hour-hand: #ffd700;
    --minute-hand: #c0c0c0;
    --center-pin: #ffd700;
    --hour-markers: #ffffff;
    --minute-markers: #4a4a6a;
    --background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    --primary: #ffd700;
    --secondary: #9d4edd;
    --accent: #00d9ff;
    --text: #ffffff;
    --text-light: #a0a0c0;
    --card-bg: rgba(26, 26, 46, 0.9);
    --button-bg: #16213e;
    --button-active: #ffd700;
    --success: #00ff88;
    --celebration-colors: #ffd700, #00d9ff, #9d4edd, #ff6b9d, #00ff88;
}

/* ==========================================
   THEME: OCEAN
   ========================================== */
[data-theme="ocean"] {
    --clock-face: #e8f4f8;
    --clock-border: #0077b6;
    --clock-inner: #caf0f8;
    --hour-hand: #03045e;
    --minute-hand: #0077b6;
    --center-pin: #ff6b6b;
    --hour-markers: #03045e;
    --minute-markers: #90e0ef;
    --background: linear-gradient(180deg, #caf0f8 0%, #90e0ef 50%, #48cae4 100%);
    --primary: #0077b6;
    --secondary: #00b4d8;
    --accent: #ff6b6b;
    --text: #03045e;
    --text-light: #0077b6;
    --card-bg: rgba(202, 240, 248, 0.9);
    --button-bg: #caf0f8;
    --button-active: #0077b6;
    --success: #00b894;
    --celebration-colors: #0077b6, #00b4d8, #48cae4, #ff6b6b, #90e0ef;
}

/* ==========================================
   THEME: GARDEN
   ========================================== */
[data-theme="garden"] {
    --clock-face: #fefae0;
    --clock-border: #bc6c25;
    --clock-inner: #faedcd;
    --hour-hand: #606c38;
    --minute-hand: #283618;
    --center-pin: #dda15e;
    --hour-markers: #283618;
    --minute-markers: #d4c4a8;
    --background: linear-gradient(180deg, #d4edda 0%, #c3e6cb 50%, #a8d5a2 100%);
    --primary: #606c38;
    --secondary: #bc6c25;
    --accent: #ffb7c5;
    --text: #283618;
    --text-light: #606c38;
    --card-bg: rgba(254, 250, 224, 0.95);
    --button-bg: #fefae0;
    --button-active: #606c38;
    --success: #2d6a4f;
    --celebration-colors: #ffb7c5, #606c38, #dda15e, #ffd6e0, #c3e6cb;
}

/* ==========================================
   THEME: SAFARI
   ========================================== */
[data-theme="safari"] {
    --clock-face: #faf0e6;
    --clock-border: #d4a373;
    --clock-inner: #faedcd;
    --hour-hand: #774936;
    --minute-hand: #6c584c;
    --center-pin: #bc6c25;
    --hour-markers: #3d2914;
    --minute-markers: #ddb892;
    --background: linear-gradient(180deg, #ffe8d6 0%, #ddbea9 50%, #cb997e 100%);
    --primary: #bc6c25;
    --secondary: #6c584c;
    --accent: #a7c957;
    --text: #3d2914;
    --text-light: #6c584c;
    --card-bg: rgba(250, 240, 230, 0.95);
    --button-bg: #faedcd;
    --button-active: #bc6c25;
    --success: #6a994e;
    --celebration-colors: #bc6c25, #a7c957, #d4a373, #6c584c, #ffe8d6;
}

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

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: var(--spacing-md);
    transition: background var(--transition-slow);
}

/* ==========================================
   APP CONTAINER
   ========================================== */
.app-container {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ==========================================
   HEADER
   ========================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.language-toggle {
    display: flex;
    gap: var(--spacing-xs);
}

.lang-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--primary);
    background: var(--button-bg);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

/* ==========================================
   THEME SELECTOR
   ========================================== */
.theme-selector {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.theme-btn {
    width: 48px;
    height: 48px;
    border: 3px solid transparent;
    background: var(--button-bg);
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.theme-btn.active {
    border-color: var(--primary);
    transform: scale(1.15);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   CLOCK AREA
   ========================================== */
.clock-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

@media (min-width: 500px) {
    .clock-area {
        display: grid;
        grid-template-columns: 220px 220px;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
    }
}

.clock-container {
    width: 220px;
    height: 220px;
    flex-shrink: 0;
    flex-grow: 0;
}

.clock-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
    cursor: grab;
}

.clock-svg:active {
    cursor: grabbing;
}

/* Clock face */
.clock-face {
    fill: var(--clock-border);
}

.clock-inner {
    fill: var(--clock-face);
}

/* Hour markers */
.hour-marker-line {
    stroke: var(--hour-markers);
    stroke-width: 2;
    stroke-linecap: round;
}

.hour-number {
    fill: var(--hour-markers);
    font-size: 14px;
    font-weight: 700;
    text-anchor: middle;
    dominant-baseline: middle;
    font-family: 'Segoe UI', sans-serif;
}

/* Minute markers */
.minute-marker {
    stroke: var(--minute-markers);
    stroke-width: 1;
    stroke-linecap: round;
}

/* Clock hands */
.hour-hand {
    stroke: var(--hour-hand);
    stroke-width: 6;
    stroke-linecap: round;
    transform-origin: 100px 100px;
    transition: stroke-width 0.15s ease;
}

.minute-hand {
    stroke: var(--minute-hand);
    stroke-width: 4;
    stroke-linecap: round;
    transform-origin: 100px 100px;
    transition: stroke-width 0.15s ease;
}

.center-pin {
    fill: var(--center-pin);
}

/* Invisible drag areas - kept for compatibility but not primary interaction */
.hand-drag-area {
    stroke: transparent;
    stroke-width: 20;
    stroke-linecap: round;
    pointer-events: none;
    transform-origin: 100px 100px;
}

/* Hand highlight for hints */
.hour-hand.hint,
.minute-hand.hint {
    animation: pulse-hint 0.5s ease-in-out 3;
}

@keyframes pulse-hint {
    0%, 100% { stroke-width: 6; opacity: 1; }
    50% { stroke-width: 10; opacity: 0.7; }
}

.minute-hand.hint {
    animation-name: pulse-hint-minute;
}

@keyframes pulse-hint-minute {
    0%, 100% { stroke-width: 4; opacity: 1; }
    50% { stroke-width: 8; opacity: 0.7; }
}

/* Time display */
.time-display {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 220px;
    overflow: hidden;
}

.time-display.hidden {
    visibility: hidden;
}

.digital-time {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
}

.time-words {
    font-size: 1.25rem;
    color: var(--text);
    font-weight: 500;
    min-height: 1.5em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.time-words-alt {
    font-size: 1.1rem;
    color: var(--text-light);
    min-height: 1.4em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ==========================================
   MODE SELECTOR
   ========================================== */
.mode-selector {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.mode-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid transparent;
    background: var(--button-bg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mode-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.mode-btn.active {
    background: var(--button-active);
    color: white;
    border-color: var(--button-active);
}

.mode-icon {
    font-size: 1.5rem;
}

.mode-label {
    font-size: 0.875rem;
    font-weight: 600;
}

/* ==========================================
   LEVEL SELECTOR
   ========================================== */
.level-selector {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.level-label {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.875rem;
}

.level-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.level-btn {
    flex: 1;
    min-width: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid transparent;
    background: var(--button-bg);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.75rem;
}

.level-btn:hover:not(.locked) {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.level-btn.active {
    background: var(--button-active);
    color: white;
    border-color: var(--button-active);
}

.level-btn.locked {
    opacity: 0.5;
    cursor: not-allowed;
}

.level-stars {
    font-size: 0.875rem;
}

.level-name {
    font-weight: 600;
}

/* ==========================================
   GAME AREA
   ========================================== */
.game-area {
    padding: var(--spacing-lg);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    min-height: 150px;
}

.mode-content {
    display: none;
    text-align: center;
}

.mode-content.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.instruction {
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: var(--spacing-md);
}

.question {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

/* Quiz options */
.quiz-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    max-width: 400px;
    margin: 0 auto;
}

.quiz-option {
    padding: var(--spacing-md);
    border: 3px solid var(--primary);
    background: var(--button-bg);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quiz-option:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

.quiz-option.correct {
    background: var(--success);
    border-color: var(--success);
    color: white;
    animation: bounce 0.5s ease;
}

.quiz-option.incorrect {
    background: #ff6b6b;
    border-color: #ff6b6b;
    color: white;
    animation: shake 0.5s ease;
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Practice mode */
.practice-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.action-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.check-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.hint-btn {
    background: var(--accent);
    color: var(--text);
}

.hint-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Feedback */
.feedback {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    font-weight: 700;
    animation: fadeIn var(--transition-normal);
}

.feedback.success {
    background: rgba(0, 184, 148, 0.2);
    color: var(--success);
}

.feedback.error {
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
}

.feedback.hidden {
    display: none;
}

/* ==========================================
   STATS BAR
   ========================================== */
.stats-bar {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-icon {
    font-size: 1.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

/* ==========================================
   MODAL
   ========================================== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn var(--transition-normal);
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--card-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    max-width: 90%;
    width: 400px;
    box-shadow: var(--shadow-lg);
    animation: scaleIn var(--transition-normal);
}

@keyframes scaleIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.modal-content h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.modal-content p {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.modal-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.modal-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--primary);
    background: var(--button-bg);
    color: var(--primary);
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

/* ==========================================
   CELEBRATION CONTAINER
   ========================================== */
.celebration-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2000;
    overflow: hidden;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confetti-fall linear forwards;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

.star-particle {
    position: absolute;
    font-size: 2rem;
    animation: star-fall linear forwards;
}

@keyframes star-fall {
    0% {
        transform: translateY(-20px) scale(0) rotate(0deg);
        opacity: 0;
    }
    20% {
        transform: translateY(10vh) scale(1) rotate(72deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) scale(0.5) rotate(360deg);
        opacity: 0;
    }
}

/* Theme-specific celebration elements */
[data-theme="space"] .star-particle::after {
    content: "⭐";
}

[data-theme="ocean"] .star-particle::after {
    content: "🐠";
}

[data-theme="garden"] .star-particle::after {
    content: "🦋";
}

[data-theme="safari"] .star-particle::after {
    content: "🐾";
}

/* ==========================================
   RESPONSIVE ADJUSTMENTS
   ========================================== */
@media (max-width: 400px) {
    html {
        font-size: 14px;
    }
    
    .header h1 {
        font-size: 1rem;
    }
    
    .clock-container {
        width: 180px;
        height: 180px;
    }
    
    .digital-time {
        font-size: 2.5rem;
    }
    
    .quiz-options {
        grid-template-columns: 1fr 1fr;
    }
    
    .quiz-option {
        padding: var(--spacing-sm);
        font-size: 1rem;
    }
}

/* Large screens */
@media (min-width: 768px) {
    .app-container {
        max-width: 700px;
    }
    
    .clock-container {
        width: 280px;
        height: 280px;
    }
    
    .digital-time {
        font-size: 3.5rem;
    }
}

/* ==========================================
   ACCESSIBILITY
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
button:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --clock-face: #ffffff;
        --hour-hand: #000000;
        --minute-hand: #000000;
        --hour-markers: #000000;
    }
}