/* ============================================================
   DevOps Pipeline Builder — Drag & Drop Puzzle Game
   Dark Cyberpunk/Terminal Theme
   ============================================================ */

/* ---- Reset & Base ---- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #06090f;
    --bg-secondary: #0d1117;
    --bg-card: #161b22;
    --bg-card-hover: #1c2333;
    --bg-surface: #1a1f2e;
    --border-color: #21262d;
    --border-glow: #30363d;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;

    --accent-blue: #58a6ff;
    --accent-blue-dim: #1f6feb;
    --accent-green: #3fb950;
    --accent-green-dim: #238636;
    --accent-purple: #bc8cff;
    --accent-purple-dim: #8957e5;
    --accent-orange: #f0883e;
    --accent-red: #f85149;
    --accent-cyan: #39d2c0;
    --accent-yellow: #d29922;

    --glow-blue: 0 0 20px rgba(88, 166, 255, 0.3);
    --glow-green: 0 0 20px rgba(63, 185, 80, 0.3);
    --glow-purple: 0 0 20px rgba(188, 140, 255, 0.3);
    --glow-red: 0 0 15px rgba(248, 81, 73, 0.4);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-primary: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-glow);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ---- Screen System ---- */
.screen {
    display: none;
    min-height: 100vh;
    animation: fadeIn 0.4s ease;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== WELCOME SCREEN ==================== */
#screen-welcome {
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.welcome-container {
    text-align: center;
    z-index: 2;
    max-width: 600px;
    padding: 2rem;
}

.welcome-glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(88, 166, 255, 0.08) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.welcome-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(57, 210, 192, 0.08);
    border: 1px solid rgba(57, 210, 192, 0.2);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
}

.welcome-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.2rem;
}

.welcome-title .title-line {
    display: block;
}

.welcome-title .accent {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.welcome-stats {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Particles Background */
.welcome-particles {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent-blue);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 6s infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }

    20% {
        opacity: 0.6;
    }

    100% {
        opacity: 0;
        transform: translateY(-100px) scale(1);
    }
}

/* ---- Buttons ---- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    background: linear-gradient(135deg, var(--accent-blue-dim), var(--accent-purple-dim));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(88, 166, 255, 0.3);
}

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

.btn-glow::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-cyan));
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-glow:hover::before {
    opacity: 1;
    animation: glowPulse 2s infinite;
}

@keyframes glowPulse {

    0%,
    100% {
        filter: blur(8px);
        opacity: 0.5;
    }

    50% {
        filter: blur(12px);
        opacity: 0.8;
    }
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-muted);
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    background: rgba(248, 81, 73, 0.1);
    color: var(--accent-red);
    border: 1px solid rgba(248, 81, 73, 0.3);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-danger:hover {
    background: rgba(248, 81, 73, 0.2);
}

.btn-back {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-back:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* ==================== PUZZLE SELECT SCREEN ==================== */
#screen-select {
    padding: 0 2rem 2rem;
}

.select-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.select-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
    flex: 1;
}

.header-progress {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.filter-bar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 100px;
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--text-muted);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--bg-card);
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.cat-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.cat-dot.devops {
    background: var(--accent-blue);
}

.cat-dot.network {
    background: var(--accent-green);
}

.cat-dot.middleware {
    background: var(--accent-purple);
}

.cat-dot.kubernetes {
    background: var(--accent-orange);
}

/* Puzzle Grid */
.puzzle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.puzzle-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.puzzle-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.puzzle-card.devops::before {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
}

.puzzle-card.network::before {
    background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan));
}

.puzzle-card.middleware::before {
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
}

.puzzle-card.kubernetes::before {
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-yellow));
}

.puzzle-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

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

.puzzle-card.completed {
    border-color: var(--accent-green-dim);
}

.puzzle-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.8rem;
}

.puzzle-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

.puzzle-category {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
}

.puzzle-category.devops {
    color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.1);
}

.puzzle-category.network {
    color: var(--accent-green);
    background: rgba(63, 185, 80, 0.1);
}

.puzzle-category.middleware {
    color: var(--accent-purple);
    background: rgba(188, 140, 255, 0.1);
}

.puzzle-category.kubernetes {
    color: var(--accent-orange);
    background: rgba(240, 136, 62, 0.1);
}

.puzzle-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.puzzle-card-diff {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.puzzle-card-diff .diff-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-right: 3px;
}

.diff-easy .diff-dot {
    background: var(--accent-green);
}

.diff-medium .diff-dot {
    background: var(--accent-yellow);
}

.diff-hard .diff-dot {
    background: var(--accent-red);
}

.puzzle-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.puzzle-stars {
    display: flex;
    gap: 2px;
}

.puzzle-stars .star {
    font-size: 0.9rem;
    opacity: 0.2;
}

.puzzle-stars .star.earned {
    opacity: 1;
}

.puzzle-card-score {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==================== GAME SCREEN ==================== */
#screen-game {
    padding: 0 2rem 2rem;
    min-height: 100vh;
}

.game-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.game-title-group {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.game-category-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 0.25rem 0.7rem;
    border-radius: 100px;
}

.game-title-group h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.game-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.timer {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--accent-cyan);
    background: rgba(57, 210, 192, 0.06);
    border: 1px solid rgba(57, 210, 192, 0.15);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
}

/* Briefing Card */
.briefing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    animation: slideDown 0.5s ease;
    position: relative;
}

.briefing-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.1), transparent, rgba(188, 140, 255, 0.1));
    z-index: -1;
}

.briefing-icon {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.briefing-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 1.5rem;
    font-style: italic;
}

.briefing-card.hidden {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Game Board */
.game-board {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.board-label,
.pool-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.drop-zones {
    display: flex;
    gap: 0.8rem;
    overflow-x: auto;
    padding: 0.5rem 0;
    align-items: stretch;
    flex-wrap: wrap;
    justify-content: center;
}

.drop-zone {
    flex: 0 0 auto;
    width: 170px;
    min-height: 90px;
    border: 2px dashed var(--border-glow);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    position: relative;
    transition: all var(--transition-base);
    background: rgba(255, 255, 255, 0.01);
}

.drop-zone .zone-number {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    position: absolute;
    top: 6px;
    left: 10px;
}

.drop-zone .zone-placeholder {
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.5;
}

.drop-zone.drag-over {
    border-color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.05);
    box-shadow: var(--glow-blue);
    transform: scale(1.03);
}

.drop-zone.filled {
    border-style: solid;
    border-color: var(--border-glow);
    background: var(--bg-card);
}

.drop-zone.correct {
    border-color: var(--accent-green) !important;
    background: rgba(63, 185, 80, 0.08) !important;
    box-shadow: var(--glow-green);
    animation: correctPulse 0.6s ease;
}

.drop-zone.incorrect {
    border-color: var(--accent-red) !important;
    background: rgba(248, 81, 73, 0.08) !important;
    box-shadow: var(--glow-red);
    animation: shake 0.5s ease;
}

@keyframes correctPulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-8px);
    }

    40% {
        transform: translateX(8px);
    }

    60% {
        transform: translateX(-5px);
    }

    80% {
        transform: translateX(5px);
    }
}

/* Connector Arrows Between Drop Zones */
.drop-zone-wrapper {
    display: flex;
    align-items: center;
    gap: 0;
}

.zone-connector {
    color: var(--text-muted);
    font-size: 1.2rem;
    opacity: 0.3;
    padding: 0 0.2rem;
    user-select: none;
}

/* Draggable Cards */
.drag-card {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: grab;
    transition: all var(--transition-fast);
    user-select: none;
    white-space: nowrap;
    position: relative;
}

.drag-card::before {
    content: '⠿';
    color: var(--text-muted);
    font-size: 1rem;
    margin-right: 0.2rem;
}

.drag-card:hover {
    border-color: var(--accent-blue);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.drag-card:active {
    cursor: grabbing;
}

.card-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.card-tech {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--accent-cyan);
    opacity: 0.7;
    letter-spacing: 0.5px;
}

.drag-card.in-slot .card-tech {
    font-size: 0.55rem;
}

.drag-card.dragging {
    opacity: 0.4;
    transform: scale(0.95);
}

.drag-card.in-slot {
    cursor: grab;
    margin: 0;
    width: 100%;
    border: none;
    background: transparent;
    justify-content: center;
}

.drag-card.in-slot::before {
    display: none;
}

/* Items Pool */
.items-pool {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.pool-cards {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    justify-content: center;
    min-height: 50px;
}

/* Game Actions */
.game-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    background: rgba(210, 153, 34, 0.08);
    color: var(--accent-yellow);
    border: 1px solid rgba(210, 153, 34, 0.2);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-hint:hover {
    background: rgba(210, 153, 34, 0.15);
}

.btn-hint.used {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-check {
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

/* Hint Overlay */
.hint-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    animation: fadeIn 0.3s ease;
}

.hint-overlay.visible {
    display: flex;
}

.hint-card {
    background: var(--bg-card);
    border: 1px solid var(--accent-yellow);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 0 40px rgba(210, 153, 34, 0.15);
}

.hint-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--accent-yellow);
    font-weight: 600;
    margin-bottom: 1rem;
}

.hint-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* ==================== RESULTS SCREEN ==================== */
#screen-results {
    align-items: center;
    justify-content: center;
    position: relative;
}

.results-container {
    text-align: center;
    z-index: 2;
    padding: 2rem;
    position: relative;
}

.results-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(63, 185, 80, 0.1) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.results-stars {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }

    60% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.results-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.results-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.results-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.result-stat {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    min-width: 100px;
}

.result-stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
}

.result-stat-value {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.results-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal-overlay.visible {
    display: flex;
}

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 380px;
    text-align: center;
}

.modal-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.modal-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .welcome-title {
        font-size: 2.5rem;
    }

    .welcome-stats {
        gap: 1.5rem;
    }

    .puzzle-grid {
        grid-template-columns: 1fr;
    }

    .drop-zones {
        flex-direction: column;
        align-items: center;
    }

    .drop-zone {
        width: 100%;
        max-width: 280px;
    }

    .zone-connector {
        transform: rotate(90deg);
    }

    .results-stats {
        flex-direction: column;
        align-items: center;
    }

    .game-header {
        flex-wrap: wrap;
    }

    .game-title-group {
        order: 3;
        flex-basis: 100%;
    }
}

/* ==================== EXPLANATION SECTION ==================== */
.explanation-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-top: 2rem;
    max-width: 700px;
    width: 100%;
    text-align: left;
}

.explanation-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-cyan);
    margin-bottom: 1.2rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-color);
}

.explanation-header svg {
    stroke: var(--accent-cyan);
}

.explanation-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.explanation-step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    position: relative;
}

.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    width: 32px;
}

.step-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
    z-index: 1;
}

.step-line {
    width: 2px;
    height: 100%;
    min-height: 16px;
    background: var(--border-glow);
    flex-grow: 1;
}

.explanation-step:last-child .step-line {
    display: none;
}

.step-content {
    padding-bottom: 1.2rem;
    flex: 1;
}

.step-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.step-tech {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-purple);
    letter-spacing: 0.5px;
    margin-bottom: 0.3rem;
}

.step-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ==================== CONTACT FOOTER ==================== */
.site-footer {
    position: relative;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    z-index: 10;
}

.footer-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem 1.5rem;
    position: relative;
}

.footer-glow {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 120px;
    background: radial-gradient(ellipse, rgba(88, 166, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand {
    max-width: 340px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.footer-logo-icon {
    font-size: 1.4rem;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-heading {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
}

.footer-social {
    display: flex;
    gap: 0.6rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.08);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(88, 166, 255, 0.15);
}

.footer-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-glow) 30%, var(--border-glow) 70%, transparent);
    margin-bottom: 1.2rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-copy {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.footer-copy a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-copy a:hover {
    color: var(--accent-cyan);
}

.footer-made {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Footer Responsive */
@media (max-width: 600px) {
    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}