/**
 * Math Memory Games - Base CSS
 * Shared styles for all memory games
 * Include this file in all game JSP pages
 */

/* ============================================
   CSS VARIABLES - Theme Colors
   Each game can override these in their own style block
   ============================================ */
:root {
    /* Default Neon Arcade Theme */
    --mm-primary: #a855f7;      /* Purple */
    --mm-secondary: #22d3ee;    /* Cyan */
    --mm-accent: #ec4899;       /* Pink */
    --mm-success: #22c55e;      /* Green */
    --mm-warning: #facc15;      /* Yellow */
    --mm-error: #ef4444;        /* Red */
    --mm-orange: #f97316;       /* Orange */

    /* Background Colors */
    --mm-bg-dark: #0f0a1e;
    --mm-bg-card: #1a1333;
    --mm-bg-border: #2d2255;

    /* Glow Effects */
    --mm-glow-primary: 0 0 20px rgba(168, 85, 247, 0.5);
    --mm-glow-secondary: 0 0 20px rgba(34, 211, 238, 0.5);
    --mm-glow-success: 0 0 20px rgba(34, 197, 94, 0.4);
}

/* ============================================
   GAME PAGE - Base Layout
   ============================================ */
.game-page {
    background: linear-gradient(135deg, var(--mm-bg-dark) 0%, #1a0a2e 50%, var(--mm-bg-dark) 100%);
    min-height: 100vh;
    padding-bottom: var(--space-8);
}

.game-page::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(168, 85, 247, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(168, 85, 247, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.game-container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* ============================================
   GAME HEADER
   ============================================ */
.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.game-title {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.game-title-icon {
    font-size: 2rem;
}

.game-title h1 {
    font-size: var(--text-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--mm-primary), var(--mm-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.game-back {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color 0.2s;
}

.game-back:hover {
    color: var(--mm-secondary);
}

.game-back svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   STATS BAR
   ============================================ */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.stat-item {
    background: var(--mm-bg-card);
    border: 1px solid var(--mm-bg-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-5);
    text-align: center;
    min-width: 80px;
}

.stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--mm-secondary);
    text-shadow: var(--mm-glow-secondary);
}

.stat-label {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Stat color variations */
.stat-item.score .stat-value { color: var(--mm-primary); }
.stat-item.streak .stat-value { color: var(--mm-warning); }
.stat-item.best .stat-value { color: var(--mm-success); }

/* ============================================
   DIFFICULTY SELECTOR
   ============================================ */
.difficulty-selector {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.diff-btn {
    padding: var(--space-2) var(--space-4);
    border: 2px solid var(--mm-bg-border);
    border-radius: var(--radius-md);
    background: var(--mm-bg-card);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.diff-btn:hover {
    border-color: var(--mm-primary);
    color: white;
}

.diff-btn.active {
    border-color: var(--mm-secondary);
    color: var(--mm-secondary);
    box-shadow: var(--mm-glow-secondary);
}

/* ============================================
   GAME AREA
   ============================================ */
.game-area {
    background: var(--mm-bg-card);
    border: 2px solid var(--mm-bg-border);
    border-radius: var(--radius-xl);
    min-height: 400px;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
}

/* ============================================
   TIMER BAR
   ============================================ */
.timer-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--mm-primary);
    width: 0%;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transition: width 0.1s linear;
}

/* ============================================
   GAME BUTTONS
   ============================================ */
.game-btn {
    padding: var(--space-3) var(--space-6);
    border: 2px solid var(--mm-primary);
    border-radius: var(--radius-lg);
    background: transparent;
    color: var(--mm-primary);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.game-btn:hover {
    background: var(--mm-primary);
    color: white;
    box-shadow: var(--mm-glow-primary);
}

.game-btn.primary {
    background: var(--mm-secondary);
    border-color: var(--mm-secondary);
    color: #0a0a0a;
}

.game-btn.primary:hover {
    box-shadow: var(--mm-glow-secondary);
}

.action-btn {
    padding: var(--space-3) var(--space-8);
    border: 2px solid var(--mm-secondary);
    border-radius: var(--radius-full);
    background: var(--mm-secondary);
    color: var(--mm-bg-dark);
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--mm-glow-secondary);
    transition: transform 0.2s;
}

.action-btn:hover {
    transform: scale(1.05);
}

.submit-btn {
    padding: var(--space-3) var(--space-6);
    background: var(--mm-primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--mm-glow-primary);
    transition: transform 0.2s;
}

.submit-btn:hover {
    transform: scale(1.02);
}

/* ============================================
   INTRO/STATE VIEWS
   ============================================ */
.state-message {
    text-align: center;
}

.state-title {
    font-size: 2.5rem;
    color: white;
    margin-bottom: var(--space-4);
    font-weight: 800;
}

.state-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-6);
    font-size: 1.1rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.prompt-text {
    font-size: 1.2rem;
    color: white;
    margin-bottom: var(--space-6);
    text-align: center;
}

/* ============================================
   WIN MODAL
   ============================================ */
.win-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.win-modal.active {
    opacity: 1;
    visibility: visible;
}

.win-content {
    background: var(--mm-bg-card);
    border: 2px solid var(--mm-success);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 0 60px rgba(34, 197, 94, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s;
}

.win-modal.active .win-content {
    transform: scale(1);
}

.win-icon {
    font-size: 4rem;
    margin-bottom: var(--space-4);
}

.win-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--mm-success);
    margin-bottom: var(--space-2);
}

.win-subtitle {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-6);
}

.win-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.win-stat {
    text-align: center;
}

.win-stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--mm-secondary);
}

.win-stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
}

.new-record {
    background: linear-gradient(135deg, var(--mm-warning), var(--mm-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.win-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.game-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--mm-bg-card);
    border: 1px solid var(--mm-bg-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-6);
    color: white;
    font-weight: 500;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 50;
    max-width: 90%;
    text-align: center;
}

.game-toast.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.game-toast.success {
    border-left: 4px solid var(--mm-success);
}

.game-toast.error {
    border-left: 4px solid var(--mm-error);
}

.game-toast.info {
    border-left: 4px solid var(--mm-secondary);
}

/* ============================================
   CONFETTI
   ============================================ */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 200;
    overflow: hidden;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -10px;
    animation: confetti-fall 3s ease-out forwards;
}

@keyframes confetti-fall {
    to {
        top: 100vh;
        transform: rotate(720deg) translateX(100px);
        opacity: 0;
    }
}

/* ============================================
   AD CONTAINERS
   ============================================ */
.ad-container-top,
.ad-container-bottom {
    display: flex;
    justify-content: center;
    margin: var(--space-4) 0;
}

.ad-container-top {
    margin-bottom: var(--space-6);
}

.ad-container-bottom {
    margin-top: var(--space-6);
}

/* Responsive visibility */
.desktop-only {
    display: none;
}

.mobile-only {
    display: flex;
}

@media (min-width: 768px) {
    .desktop-only {
        display: flex;
    }

    .mobile-only {
        display: none;
    }
}

/* ============================================
   FORM INPUTS
   ============================================ */
.answer-input {
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid var(--mm-bg-border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    font-size: 1.5rem;
    color: white;
    width: 150px;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
}

.answer-input:focus {
    border-color: var(--mm-primary);
}

.answer-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-slideUp { animation: slideUp 0.3s ease-out; }
.animate-fadeIn { animation: fadeIn 0.3s ease-out; }
.animate-popIn { animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.animate-shake { animation: shake 0.4s ease; }
.animate-pulse { animation: pulse 0.5s ease; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 600px) {
    .stats-bar {
        gap: var(--space-2);
    }

    .stat-item {
        padding: var(--space-2) var(--space-3);
        min-width: 65px;
    }

    .stat-value {
        font-size: var(--text-xl);
    }

    .game-area {
        padding: var(--space-4);
        min-height: 350px;
    }

    .state-title {
        font-size: 2rem;
    }

    .win-content {
        padding: var(--space-6);
    }

    .win-stats {
        gap: var(--space-4);
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-primary { color: var(--mm-primary); }
.text-secondary { color: var(--mm-secondary); }
.text-success { color: var(--mm-success); }
.text-warning { color: var(--mm-warning); }
.text-error { color: var(--mm-error); }

.glow-primary { text-shadow: var(--mm-glow-primary); }
.glow-secondary { text-shadow: var(--mm-glow-secondary); }
.glow-success { text-shadow: var(--mm-glow-success); }