/* ═══════════════════════════════════════════════════════════
   MINESWEEPER - CLASSIC STYLE
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=Inter:wght@400;600;700&display=swap');

:root {
    --primary-color: #961114;
    --secondary-color: #FFD700;
    --bg-dark: #070707;
    --bg-secondary: #1a1a1a;
    --text-color: #FCF7F8;
    --border-color: rgba(252, 247, 248, 0.1);
    --font-pixel: 'Press Start 2P', monospace;
    --font-body: 'Inter', sans-serif;
    
    /* Classic Minesweeper Colors */
    --cell-covered: #BDBDBD;
    --cell-revealed: #C0C0C0;
    --cell-border-light: #FFFFFF;
    --cell-border-dark: #7B7B7B;
    --mine-red: #FF0000;
    --flag-red: #FF0000;
    
    /* Number Colors (Classic) */
    --num-1: #0000FF;
    --num-2: #008000;
    --num-3: #FF0000;
    --num-4: #000080;
    --num-5: #800000;
    --num-6: #008080;
    --num-7: #000000;
    --num-8: #808080;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-color);
    min-height: 100vh;
}

/* ═══ NAVBAR ═══ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(7, 7, 7, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--primary-color);
    z-index: 1000;
}

.navbar-container {
    max-width: 1920px;
    height: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-pixel);
    font-size: 1.2rem;
    color: var(--primary-color);
}

.logo svg {
    stroke: var(--primary-color);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.nav-btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    font-family: var(--font-body);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

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

.nav-btn.secondary {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.nav-btn.secondary:hover {
    background: var(--secondary-color);
    color: var(--bg-dark);
}

/* ═══ GAME CONTAINER ═══ */
.game-container {
    margin-top: 90px;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 90px);
}

/* ═══ DIFFICULTY PANEL ═══ */
.difficulty-panel {
    text-align: center;
    max-width: 800px;
}

.difficulty-panel h2 {
    font-family: var(--font-pixel);
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.difficulty-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.difficulty-btn {
    background: var(--bg-secondary);
    border: 3px solid var(--primary-color);
    border-radius: 12px;
    padding: 2rem;
    cursor: pointer;
    transition: all 0.3s;
}

.difficulty-btn.easy-diff {
    border-color: #00FF00;
}

.difficulty-btn.easy-diff:hover {
    border-color: #00FF00;
    box-shadow: 0 10px 30px rgba(0, 255, 0, 0.4);
}

.difficulty-btn.medium-diff {
    border-color: #FFD700;
}

.difficulty-btn.medium-diff:hover {
    border-color: #FFD700;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.4);
}

.difficulty-btn.hard-diff {
    border-color: #FF0000;
}

.difficulty-btn.hard-diff:hover {
    border-color: #FF0000;
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
}

.difficulty-btn:hover {
    transform: translateY(-10px);
}

.diff-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
    font-weight: bold;
}

.easy-diff .diff-icon {
    color: #00FF00;
}

.medium-diff .diff-icon {
    color: #FFD700;
}

.hard-diff .diff-icon {
    color: #FF0000;
}

.difficulty-btn h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.difficulty-btn p {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* ═══ GAME WRAPPER ═══ */
.game-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

/* ═══ GAME HEADER (Classic Style) ═══ */
.game-header {
    background: var(--cell-covered);
    border: 4px solid;
    border-color: var(--cell-border-light) var(--cell-border-dark) var(--cell-border-dark) var(--cell-border-light);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    min-width: 300px;
}

.counter-display {
    background: #000;
    border: 2px inset #555;
    padding: 0.5rem 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.counter-icon {
    font-size: 1.2rem;
}

.counter-value {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    color: #FF0000;
    letter-spacing: 0.1em;
}

.face-btn {
    background: var(--cell-covered);
    border: 3px solid;
    border-color: var(--cell-border-light) var(--cell-border-dark) var(--cell-border-dark) var(--cell-border-light);
    width: 50px;
    height: 50px;
    cursor: pointer;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border 0.1s;
}

.face-btn:active {
    border-color: var(--cell-border-dark) var(--cell-border-light) var(--cell-border-light) var(--cell-border-dark);
}

/* ═══ GAME BOARD (Classic Style) ═══ */
.game-board {
    background: var(--cell-covered);
    border: 4px solid;
    border-color: var(--cell-border-dark) var(--cell-border-light) var(--cell-border-light) var(--cell-border-dark);
    padding: 0.5rem;
    display: inline-grid;
    gap: 0;
}

.cell {
    width: 30px;
    height: 30px;
    background: var(--cell-covered);
    border: 3px solid;
    border-color: var(--cell-border-light) var(--cell-border-dark) var(--cell-border-dark) var(--cell-border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    user-select: none;
}

.cell:active:not(.revealed):not(.flagged) {
    border-color: var(--cell-border-dark) var(--cell-border-light) var(--cell-border-light) var(--cell-border-dark);
}

.cell.revealed {
    background: var(--cell-revealed);
    border: 1px solid #7B7B7B;
    cursor: default;
}

.cell.flagged::before {
    content: '🚩';
    font-size: 1.2rem;
}

.cell.mine::before {
    content: '💣';
    font-size: 1.2rem;
}

.cell.mine-hit {
    background: var(--mine-red);
}

.cell.mine-wrong::before {
    content: '❌';
}

/* Number Colors */
.cell[data-count="1"] { color: var(--num-1); }
.cell[data-count="2"] { color: var(--num-2); }
.cell[data-count="3"] { color: var(--num-3); }
.cell[data-count="4"] { color: var(--num-4); }
.cell[data-count="5"] { color: var(--num-5); }
.cell[data-count="6"] { color: var(--num-6); }
.cell[data-count="7"] { color: var(--num-7); }
.cell[data-count="8"] { color: var(--num-8); }

/* ═══ MENU BUTTON ═══ */
.menu-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.75rem 2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

/* ═══ LEADERBOARD MODAL ═══ */
.leaderboard-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}

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

.leaderboard-container {
    background: var(--bg-secondary);
    border: 3px solid var(--secondary-color);
    border-radius: 12px;
    padding: 2.5rem;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    color: var(--secondary-color);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.leaderboard-container h2 {
    font-family: var(--font-pixel);
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.difficulty-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tab-btn {
    flex: 1;
    padding: 0.75rem;
    background: var(--bg-dark);
    border: 2px solid rgba(255, 215, 0, 0.3);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

.tab-btn.active {
    border-color: var(--secondary-color);
    background: rgba(255, 215, 0, 0.1);
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.leaderboard-item {
    display: grid;
    grid-template-columns: 50px 1fr 100px;
    align-items: center;
    background: rgba(255, 215, 0, 0.05);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 8px;
    padding: 1rem;
}

.leaderboard-item.current-user {
    border-color: var(--primary-color);
    background: rgba(150, 17, 20, 0.1);
}

.rank {
    font-family: var(--font-pixel);
    font-size: 1.2rem;
    color: var(--secondary-color);
    text-align: center;
}

.rank.top-1 { color: #FFD700; }
.rank.top-2 { color: #C0C0C0; }
.rank.top-3 { color: #CD7F32; }

.username {
    font-weight: 600;
}

.score {
    font-family: var(--font-pixel);
    font-size: 0.8rem;
    color: var(--secondary-color);
    text-align: right;
}

/* ═══ GAME OVER MODAL ═══ */
.game-over-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.game-over-modal.visible {
    display: flex;
}

.game-over-content {
    background: var(--bg-secondary);
    border: 3px solid var(--primary-color);
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    max-width: 400px;
}

.game-over-content h2 {
    font-family: var(--font-pixel);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.game-over-stats {
    margin: 2rem 0;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.1rem;
}

.game-over-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.game-btn {
    padding: 1rem 2rem;
    background: var(--primary-color);
    border: none;
    color: white;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.game-btn:hover {
    background: #7a0d0f;
}

.game-btn.secondary {
    background: var(--bg-dark);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
    .difficulty-grid {
        grid-template-columns: 1fr;
    }
    
    .game-header {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .cell {
        width: 25px;
        height: 25px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .navbar-container {
        padding: 0 1rem;
    }
    
    .logo {
        font-size: 0.9rem;
    }
    
    .nav-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .cell {
        width: 22px;
        height: 22px;
        font-size: 0.8rem;
    }
}