/* CSS Variables */
:root {
    --color-bg: #0a1628;
    --color-bg-light: #0f2847;
    --color-board: #1e4d8c;
    --color-board-dark: #153a6b;
    --color-board-shadow: #0a2244;
    --color-red: #e63946;
    --color-red-light: #ff6b6b;
    --color-red-dark: #b82d38;
    --color-yellow: #f9c846;
    --color-yellow-light: #ffe066;
    --color-yellow-dark: #d4a82a;
    --color-cyan: #00d4ff;
    --color-cyan-glow: rgba(0, 212, 255, 0.4);
    --color-white: #ffffff;
    --color-gray: #8892a4;
    --color-cell: #0d1e36;
    --color-cell-shadow: #060d16;

    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Outfit', sans-serif;

    --board-columns: 7;
    --board-rows: 6;
    --cell-size: min(11vw, 60px);
    --cell-gap: min(1.5vw, 8px);
    --board-padding: min(3vw, 16px);

    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-bounce: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-white);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(30, 77, 140, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 90%, rgba(230, 57, 70, 0.1) 0%, transparent 40%);
}

/* Game Container */
.game-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 16px;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* Header */
.game-header {
    text-align: center;
    width: 100%;
}

.game-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 12vw, 4rem);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 12px;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.game-title .four {
    background: linear-gradient(180deg, var(--color-cyan) 0%, #0099cc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

/* Score Board */
.score-board {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: var(--color-bg-light);
    padding: 12px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.player-score {
    display: flex;
    align-items: center;
    gap: 8px;
}

.score-chip {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.3),
                inset 0 3px 6px rgba(255, 255, 255, 0.2);
}

.score-chip.red {
    background: radial-gradient(circle at 35% 35%, var(--color-red-light), var(--color-red), var(--color-red-dark));
}

.score-chip.yellow {
    background: radial-gradient(circle at 35% 35%, var(--color-yellow-light), var(--color-yellow), var(--color-yellow-dark));
}

.score-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-gray);
}

.score-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    min-width: 24px;
    text-align: center;
}

.player-1-score .score-value {
    color: var(--color-red);
}

.player-2-score .score-value {
    color: var(--color-yellow);
}

.score-divider {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--color-cyan);
    letter-spacing: 0.1em;
}

/* Turn Indicator */
.turn-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 24px;
    background: var(--color-bg-light);
    border-radius: 50px;
    border: 2px solid transparent;
    transition: border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.turn-indicator.player-1 {
    border-color: var(--color-red);
    box-shadow: 0 0 20px rgba(230, 57, 70, 0.3);
}

.turn-indicator.player-2 {
    border-color: var(--color-yellow);
    box-shadow: 0 0 20px rgba(249, 200, 70, 0.3);
}

.turn-chip {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    transition: all var(--transition-medium);
    box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.3),
                inset 0 3px 6px rgba(255, 255, 255, 0.2);
}

.turn-chip.red {
    background: radial-gradient(circle at 35% 35%, var(--color-red-light), var(--color-red), var(--color-red-dark));
}

.turn-chip.yellow {
    background: radial-gradient(circle at 35% 35%, var(--color-yellow-light), var(--color-yellow), var(--color-yellow-dark));
}

.turn-text {
    font-weight: 600;
    font-size: 1rem;
    transition: color var(--transition-medium);
}

/* Board */
.board-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.board-frame {
    background: linear-gradient(180deg, var(--color-board) 0%, var(--color-board-dark) 100%);
    padding: var(--board-padding);
    border-radius: 16px;
    box-shadow:
        0 8px 0 var(--color-board-shadow),
        0 12px 40px rgba(0, 0, 0, 0.5),
        inset 0 2px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.board-stand {
    width: 80%;
    height: 20px;
    background: linear-gradient(180deg, var(--color-board-dark) 0%, var(--color-board-shadow) 100%);
    border-radius: 0 0 12px 12px;
    margin-top: -4px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

/* Column Indicators */
.column-indicators {
    display: grid;
    grid-template-columns: repeat(var(--board-columns), var(--cell-size));
    gap: var(--cell-gap);
    margin-bottom: 8px;
    padding: 0 4px;
}

.column-indicator {
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.column-indicator:hover .indicator-arrow {
    transform: translateY(4px);
    opacity: 1;
}

.indicator-arrow {
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 12px solid var(--color-cyan);
    opacity: 0.5;
    transition: all var(--transition-fast);
    filter: drop-shadow(0 0 8px var(--color-cyan-glow));
}

.column-indicator.disabled {
    pointer-events: none;
}

.column-indicator.disabled .indicator-arrow {
    opacity: 0.2;
}

/* Game Board Grid */
.game-board {
    display: grid;
    grid-template-columns: repeat(var(--board-columns), var(--cell-size));
    grid-template-rows: repeat(var(--board-rows), var(--cell-size));
    gap: var(--cell-gap);
}

/* Cells */
.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    background: var(--color-cell);
    border-radius: 50%;
    box-shadow:
        inset 0 4px 8px rgba(0, 0, 0, 0.5),
        inset 0 -2px 4px rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: box-shadow var(--transition-fast);
}

.cell:hover {
    box-shadow:
        inset 0 4px 8px rgba(0, 0, 0, 0.5),
        inset 0 -2px 4px rgba(255, 255, 255, 0.05),
        0 0 15px var(--color-cyan-glow);
}

.cell.disabled {
    pointer-events: none;
}

/* Pieces */
.piece {
    position: absolute;
    width: calc(100% - 8px);
    height: calc(100% - 8px);
    top: 4px;
    left: 4px;
    border-radius: 50%;
    box-shadow:
        inset 0 -4px 8px rgba(0, 0, 0, 0.3),
        inset 0 4px 8px rgba(255, 255, 255, 0.2),
        0 2px 4px rgba(0, 0, 0, 0.3);
}

.piece.red {
    background: radial-gradient(circle at 35% 35%, var(--color-red-light), var(--color-red), var(--color-red-dark));
}

.piece.yellow {
    background: radial-gradient(circle at 35% 35%, var(--color-yellow-light), var(--color-yellow), var(--color-yellow-dark));
}

/* Piece Drop Animation */
.piece.dropping {
    animation: dropPiece var(--drop-duration, 0.5s) cubic-bezier(0.34, 1.15, 0.64, 1) forwards;
}

@keyframes dropPiece {
    0% {
        transform: translateY(calc(-100% - var(--drop-distance, 300px)));
    }
    60% {
        transform: translateY(8px);
    }
    75% {
        transform: translateY(-4px);
    }
    90% {
        transform: translateY(2px);
    }
    100% {
        transform: translateY(0);
    }
}

/* Winning Pieces */
.piece.winning {
    animation: winPulse 0.8s ease-in-out infinite;
    z-index: 2;
}

@keyframes winPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow:
            inset 0 -4px 8px rgba(0, 0, 0, 0.3),
            inset 0 4px 8px rgba(255, 255, 255, 0.2),
            0 0 0 0 var(--color-cyan);
    }
    50% {
        transform: scale(1.05);
        box-shadow:
            inset 0 -4px 8px rgba(0, 0, 0, 0.3),
            inset 0 4px 8px rgba(255, 255, 255, 0.2),
            0 0 20px 4px var(--color-cyan);
    }
}

/* Controls */
.game-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.btn-reset {
    background: var(--color-cyan);
    color: var(--color-bg);
}

.btn-reset:hover {
    background: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--color-cyan-glow);
}

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

.btn-reset-scores {
    background: transparent;
    color: var(--color-gray);
    border: 1px solid var(--color-gray);
}

.btn-reset-scores:hover {
    color: var(--color-white);
    border-color: var(--color-white);
}

/* Win Overlay */
.win-overlay,
.draw-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 22, 40, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    backdrop-filter: blur(8px);
}

.win-overlay.active,
.draw-overlay.active {
    opacity: 1;
    visibility: visible;
}

.win-modal,
.draw-modal {
    text-align: center;
    transform: scale(0.8);
    transition: transform var(--transition-bounce);
}

.win-overlay.active .win-modal,
.draw-overlay.active .draw-modal {
    transform: scale(1);
}

.win-chip {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 24px;
    box-shadow:
        inset 0 -8px 16px rgba(0, 0, 0, 0.3),
        inset 0 8px 16px rgba(255, 255, 255, 0.2),
        0 0 40px var(--color-cyan-glow);
    animation: winChipPulse 1s ease-in-out infinite;
}

@keyframes winChipPulse {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    50% {
        transform: scale(1.1) rotate(5deg);
    }
}

.win-chip.red {
    background: radial-gradient(circle at 35% 35%, var(--color-red-light), var(--color-red), var(--color-red-dark));
}

.win-chip.yellow {
    background: radial-gradient(circle at 35% 35%, var(--color-yellow-light), var(--color-yellow), var(--color-yellow-dark));
}

.win-title,
.draw-title {
    font-family: var(--font-display);
    font-size: 3rem;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    color: var(--color-white);
}

.win-subtitle,
.draw-subtitle {
    color: var(--color-cyan);
    font-size: 1.2rem;
    margin-bottom: 32px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.btn-play-again {
    background: linear-gradient(135deg, var(--color-cyan) 0%, #0099cc 100%);
    color: var(--color-bg);
    font-size: 1.1rem;
    padding: 16px 40px;
    box-shadow: 0 4px 20px var(--color-cyan-glow);
}

.btn-play-again:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--color-cyan-glow);
}

/* Responsive */
@media (max-width: 400px) {
    :root {
        --cell-size: 12vw;
        --cell-gap: 1.2vw;
        --board-padding: 2.5vw;
    }

    .game-container {
        padding: 12px;
        gap: 16px;
    }

    .score-board {
        padding: 10px 16px;
        gap: 12px;
    }

    .score-name {
        display: none;
    }

    .turn-indicator {
        padding: 8px 20px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (min-width: 600px) {
    .game-container {
        padding: 24px;
        gap: 24px;
        justify-content: center;
    }

    :root {
        --cell-size: 65px;
        --cell-gap: 10px;
        --board-padding: 20px;
    }
}

/* Touch Device Adjustments */
@media (hover: none) {
    .cell:hover {
        box-shadow:
            inset 0 4px 8px rgba(0, 0, 0, 0.5),
            inset 0 -2px 4px rgba(255, 255, 255, 0.05);
    }

    .column-indicator .indicator-arrow {
        opacity: 0.7;
    }
}

/* Prevent text selection during gameplay */
.game-board,
.column-indicators {
    user-select: none;
    -webkit-user-select: none;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Loading State */
.game-board.loading .cell {
    animation: cellLoad 0.5s ease-out backwards;
}

.game-board.loading .cell:nth-child(1) { animation-delay: 0.02s; }
.game-board.loading .cell:nth-child(2) { animation-delay: 0.04s; }
.game-board.loading .cell:nth-child(3) { animation-delay: 0.06s; }
.game-board.loading .cell:nth-child(4) { animation-delay: 0.08s; }
.game-board.loading .cell:nth-child(5) { animation-delay: 0.10s; }
.game-board.loading .cell:nth-child(6) { animation-delay: 0.12s; }
.game-board.loading .cell:nth-child(7) { animation-delay: 0.14s; }
.game-board.loading .cell:nth-child(8) { animation-delay: 0.16s; }
.game-board.loading .cell:nth-child(9) { animation-delay: 0.18s; }
.game-board.loading .cell:nth-child(10) { animation-delay: 0.20s; }
.game-board.loading .cell:nth-child(11) { animation-delay: 0.22s; }
.game-board.loading .cell:nth-child(12) { animation-delay: 0.24s; }
.game-board.loading .cell:nth-child(13) { animation-delay: 0.26s; }
.game-board.loading .cell:nth-child(14) { animation-delay: 0.28s; }
.game-board.loading .cell:nth-child(15) { animation-delay: 0.30s; }
.game-board.loading .cell:nth-child(16) { animation-delay: 0.32s; }
.game-board.loading .cell:nth-child(17) { animation-delay: 0.34s; }
.game-board.loading .cell:nth-child(18) { animation-delay: 0.36s; }
.game-board.loading .cell:nth-child(19) { animation-delay: 0.38s; }
.game-board.loading .cell:nth-child(20) { animation-delay: 0.40s; }
.game-board.loading .cell:nth-child(21) { animation-delay: 0.42s; }
.game-board.loading .cell:nth-child(22) { animation-delay: 0.44s; }
.game-board.loading .cell:nth-child(23) { animation-delay: 0.46s; }
.game-board.loading .cell:nth-child(24) { animation-delay: 0.48s; }
.game-board.loading .cell:nth-child(25) { animation-delay: 0.50s; }
.game-board.loading .cell:nth-child(26) { animation-delay: 0.52s; }
.game-board.loading .cell:nth-child(27) { animation-delay: 0.54s; }
.game-board.loading .cell:nth-child(28) { animation-delay: 0.56s; }
.game-board.loading .cell:nth-child(29) { animation-delay: 0.58s; }
.game-board.loading .cell:nth-child(30) { animation-delay: 0.60s; }
.game-board.loading .cell:nth-child(31) { animation-delay: 0.62s; }
.game-board.loading .cell:nth-child(32) { animation-delay: 0.64s; }
.game-board.loading .cell:nth-child(33) { animation-delay: 0.66s; }
.game-board.loading .cell:nth-child(34) { animation-delay: 0.68s; }
.game-board.loading .cell:nth-child(35) { animation-delay: 0.70s; }
.game-board.loading .cell:nth-child(36) { animation-delay: 0.72s; }
.game-board.loading .cell:nth-child(37) { animation-delay: 0.74s; }
.game-board.loading .cell:nth-child(38) { animation-delay: 0.76s; }
.game-board.loading .cell:nth-child(39) { animation-delay: 0.78s; }
.game-board.loading .cell:nth-child(40) { animation-delay: 0.80s; }
.game-board.loading .cell:nth-child(41) { animation-delay: 0.82s; }
.game-board.loading .cell:nth-child(42) { animation-delay: 0.84s; }

@keyframes cellLoad {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* =====================================================
   SCREEN MANAGEMENT
   ===================================================== */
.screen {
    position: fixed;
    inset: 0;
    display: none;
    overflow-y: auto;
}

.screen.active {
    display: block;
}

/* =====================================================
   MAIN MENU SCREEN
   ===================================================== */
.main-menu-screen {
    display: none;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(30, 77, 140, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 90%, rgba(230, 57, 70, 0.1) 0%, transparent 40%);
}

.main-menu-screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-container {
    text-align: center;
    padding: 24px;
    max-width: 400px;
    width: 100%;
}

.menu-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 15vw, 6rem);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 8px;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.menu-title .four {
    background: linear-gradient(180deg, var(--color-cyan) 0%, #0099cc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.menu-subtitle {
    color: var(--color-gray);
    font-size: 1.1rem;
    margin-bottom: 48px;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.btn-menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 24px 32px;
    background: var(--color-bg-light);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    color: var(--color-white);
    font-size: 1.2rem;
    font-weight: 600;
    transition: all var(--transition-medium);
}

.btn-menu:hover {
    border-color: var(--color-cyan);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.2);
}

.btn-menu svg {
    width: 32px;
    height: 32px;
    color: var(--color-cyan);
}

.btn-desc {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-gray);
}

/* =====================================================
   LOGIN SCREEN
   ===================================================== */
.login-screen {
    display: none;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(30, 77, 140, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%);
}

.login-screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    text-align: center;
    padding: 24px;
    max-width: 400px;
    width: 100%;
    position: relative;
}

.login-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 3rem);
    letter-spacing: 0.05em;
    margin-bottom: 32px;
    color: var(--color-white);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.login-input {
    font-family: var(--font-body);
    font-size: 1.1rem;
    padding: 16px 24px;
    background: var(--color-bg-light);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: var(--color-white);
    text-align: center;
    transition: all var(--transition-fast);
}

.login-input:focus {
    outline: none;
    border-color: var(--color-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.login-input::placeholder {
    color: var(--color-gray);
}

.btn-submit {
    background: linear-gradient(135deg, var(--color-cyan) 0%, #0099cc 100%);
    color: var(--color-bg);
    font-size: 1.1rem;
    padding: 16px 32px;
    justify-content: center;
    box-shadow: 0 4px 20px var(--color-cyan-glow);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-cyan-glow);
}

/* =====================================================
   BACK BUTTON
   ===================================================== */
.btn-back {
    position: absolute;
    top: 24px;
    left: 24px;
    background: transparent;
    color: var(--color-gray);
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-back:hover {
    color: var(--color-white);
}

/* =====================================================
   LOBBY SCREEN
   ===================================================== */
.lobby-screen {
    display: none;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(30, 77, 140, 0.3) 0%, transparent 50%);
}

.lobby-screen.active {
    display: block;
}

.lobby-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.lobby-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-top: 48px;
    position: relative;
}

.lobby-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 3rem);
    letter-spacing: 0.05em;
    color: var(--color-white);
}

.lobby-username {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--color-bg-light);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.username-label {
    font-size: 0.85rem;
    color: var(--color-gray);
}

.username-value {
    font-weight: 600;
    color: var(--color-cyan);
}

.lobby-actions {
    margin-bottom: 24px;
}

.btn-create-game {
    width: 100%;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-cyan) 0%, #0099cc 100%);
    color: var(--color-bg);
    font-size: 1.1rem;
    padding: 16px 32px;
    box-shadow: 0 4px 20px var(--color-cyan-glow);
}

.btn-create-game:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-cyan-glow);
}

.games-list-container {
    flex: 1;
}

.games-list-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    color: var(--color-gray);
    margin-bottom: 16px;
}

.games-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.games-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--color-gray);
}

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

.games-empty p {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--color-white);
}

.games-empty span {
    font-size: 0.9rem;
}

.game-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--color-bg-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: all var(--transition-fast);
}

.game-item:hover {
    border-color: var(--color-cyan);
    transform: translateX(4px);
}

.game-item-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.game-item-host {
    font-weight: 600;
    color: var(--color-white);
}

.game-item-code {
    font-size: 0.85rem;
    color: var(--color-gray);
    font-family: monospace;
}

.btn-join {
    background: var(--color-cyan);
    color: var(--color-bg);
    padding: 10px 20px;
    font-size: 0.9rem;
}

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

/* =====================================================
   WAITING SCREEN
   ===================================================== */
.waiting-screen {
    display: none;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse at 50% 50%, rgba(30, 77, 140, 0.3) 0%, transparent 50%);
}

.waiting-screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.waiting-container {
    text-align: center;
    padding: 24px;
    max-width: 400px;
    width: 100%;
    position: relative;
}

.waiting-content {
    padding-top: 48px;
}

.waiting-spinner {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 32px;
}

.spinner-chip {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    animation: spinnerBounce 1.4s ease-in-out infinite;
    box-shadow: inset 0 -4px 8px rgba(0, 0, 0, 0.3),
                inset 0 4px 8px rgba(255, 255, 255, 0.2);
}

.spinner-chip.red {
    background: radial-gradient(circle at 35% 35%, var(--color-red-light), var(--color-red), var(--color-red-dark));
}

.spinner-chip.yellow {
    background: radial-gradient(circle at 35% 35%, var(--color-yellow-light), var(--color-yellow), var(--color-yellow-dark));
    animation-delay: 0.2s;
}

@keyframes spinnerBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.waiting-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    color: var(--color-white);
}

.waiting-subtitle {
    color: var(--color-gray);
    margin-bottom: 16px;
}

.game-code-box {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--color-bg-light);
    border: 2px solid var(--color-cyan);
    border-radius: 12px;
}

.game-code {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 0.2em;
    color: var(--color-cyan);
}

.btn-copy {
    background: transparent;
    color: var(--color-cyan);
    padding: 8px;
    border-radius: 8px;
}

.btn-copy:hover {
    background: rgba(0, 212, 255, 0.1);
}

/* =====================================================
   GAME SCREEN
   ===================================================== */
.game-screen {
    display: none;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(30, 77, 140, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 90%, rgba(230, 57, 70, 0.1) 0%, transparent 40%);
}

.game-screen.active {
    display: block;
}

.game-screen .game-container {
    padding-top: 16px;
}

.game-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    position: relative;
}

.game-header-top .game-title {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
    margin-bottom: 0;
}

.btn-leave-game {
    position: static;
    background: transparent;
    color: var(--color-gray);
    padding: 8px 12px;
    font-size: 0.85rem;
}

.btn-leave-game:hover {
    color: var(--color-white);
}

/* Connection Status */
.connection-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--color-bg-light);
    border-radius: 50px;
    font-size: 0.8rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 8px #4ade80;
}

.connection-status.disconnected .status-dot {
    background: var(--color-red);
    box-shadow: 0 0 8px var(--color-red);
}

.status-text {
    color: var(--color-gray);
}

/* Hide connection status and leave button in local mode */
.game-screen.local-mode .connection-status,
.game-screen.local-mode .btn-leave-game {
    display: none;
}

.game-screen.local-mode .game-header-top {
    justify-content: center;
}

/* Hide reset scores in online mode */
.game-screen.online-mode .btn-reset-scores {
    display: none;
}

/* Win/Draw overlay buttons */
.win-buttons,
.draw-buttons,
.rematch-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-leave-after-win,
.btn-leave-after-draw {
    background: transparent;
    color: var(--color-gray);
    border: 1px solid var(--color-gray);
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-leave-after-win:hover,
.btn-leave-after-draw:hover {
    color: var(--color-white);
    border-color: var(--color-white);
}

/* Hide leave buttons in local mode */
.game-screen.local-mode .btn-leave-after-win,
.game-screen.local-mode .btn-leave-after-draw {
    display: none;
}

/* =====================================================
   REMATCH OVERLAY
   ===================================================== */
.rematch-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 22, 40, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    backdrop-filter: blur(8px);
}

.rematch-overlay.active {
    opacity: 1;
    visibility: visible;
}

.rematch-modal {
    text-align: center;
    transform: scale(0.8);
    transition: transform var(--transition-bounce);
    padding: 24px;
}

.rematch-overlay.active .rematch-modal {
    transform: scale(1);
}

.rematch-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    color: var(--color-white);
}

.rematch-subtitle {
    color: var(--color-cyan);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.btn-accept-rematch {
    background: linear-gradient(135deg, var(--color-cyan) 0%, #0099cc 100%);
    color: var(--color-bg);
    padding: 14px 32px;
    font-size: 1rem;
    box-shadow: 0 4px 20px var(--color-cyan-glow);
}

.btn-accept-rematch:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-cyan-glow);
}

.btn-decline-rematch {
    background: transparent;
    color: var(--color-gray);
    border: 1px solid var(--color-gray);
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-decline-rematch:hover {
    color: var(--color-white);
    border-color: var(--color-white);
}

/* =====================================================
   OPPONENT LEFT OVERLAY
   ===================================================== */
.opponent-left-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 22, 40, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    backdrop-filter: blur(8px);
}

.opponent-left-overlay.active {
    opacity: 1;
    visibility: visible;
}

.opponent-left-modal {
    text-align: center;
    transform: scale(0.8);
    transition: transform var(--transition-bounce);
    padding: 24px;
}

.opponent-left-overlay.active .opponent-left-modal {
    transform: scale(1);
}

.opponent-left-modal svg {
    color: var(--color-red);
    margin-bottom: 24px;
}

.opponent-left-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    color: var(--color-white);
}

.opponent-left-subtitle {
    color: var(--color-gray);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.btn-back-to-lobby {
    background: linear-gradient(135deg, var(--color-cyan) 0%, #0099cc 100%);
    color: var(--color-bg);
    padding: 14px 32px;
    font-size: 1rem;
    box-shadow: 0 4px 20px var(--color-cyan-glow);
}

.btn-back-to-lobby:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-cyan-glow);
}

/* =====================================================
   WAITING FOR OPPONENT TURN
   ===================================================== */
.game-board.waiting-turn {
    opacity: 0.7;
    pointer-events: none;
}

.game-board.waiting-turn .cell {
    cursor: not-allowed;
}

/* =====================================================
   RESPONSIVE ADJUSTMENTS
   ===================================================== */
@media (max-width: 400px) {
    .lobby-header {
        padding-top: 60px;
    }

    .btn-back {
        top: 16px;
        left: 16px;
    }

    .game-code {
        font-size: 1.5rem;
    }

    .menu-buttons {
        gap: 12px;
    }

    .btn-menu {
        padding: 20px 24px;
    }
}

@media (min-width: 600px) {
    .lobby-container {
        padding: 32px;
    }

    .lobby-header {
        flex-direction: row;
        justify-content: space-between;
        padding-top: 24px;
    }

    .lobby-header .btn-back {
        position: static;
    }
}