:root {
    --bg: #0d0d14;
    --surface: #16161f;
    --surface2: #1e1e2e;
    --accent: #bb86fc;
    --teal: #03dac6;
    --red: #cf6679;
    --text: #e8e8f0;
    --dim: #6b6b8a;

    --cell-size: 28px;
    --cell-gap: 3px;
    --radius: 6px;

    --t-blue: #4fc3f7;
    --t-orange: #ffb74d;
    --t-yellow: #fff176;
    --t-green: #81c784;
    --t-purple: #ba68c8;
    --t-red: #e57373;
    --t-cyan: #4dd0e1;
}

/* RESET */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

html,
body {
    touch-action: none;
    overscroll-behavior: none;
    position: fixed;
    width: 100%;
    height: 100%;
}

body {
    font-family: 'Poppins', 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100dvh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ─── HUD ─── */
.hud {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 10px 16px;
    background: var(--surface);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    flex-shrink: 0;
    z-index: 10;
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.hud-item .label {
    font-size: 9px;
    letter-spacing: 1.5px;
    color: var(--dim);
    text-transform: uppercase;
}

.hud-item .value {
    font-size: 22px;
    font-weight: 800;
    color: var(--teal);
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

/* ─── Game Area ─── */

.game-area,
.grid-container,
#grid,
.game-overlay {
    touch-action: none;
}

.game-area {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 12px 10px;
    position: relative;
}

/* ─── Grid ─── */
.grid-container {
    padding: 8px;
    background: var(--surface2);
    border-radius: 12px;
    box-shadow:
        0 4px 20px rgba(0, 0, 0, 0.5),
        inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.grid {
    display: grid;
    grid-template-columns: repeat(10, var(--cell-size));
    grid-template-rows: repeat(20, var(--cell-size));
    gap: var(--cell-gap);
}

.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius);
    transition: background-color 0.12s ease;
}

/* ─── Tetromino Colors ─── */
.cell.I {
    background: var(--t-cyan);
}

.cell.J {
    background: var(--t-blue);
}

.cell.L {
    background: var(--t-orange);
}

.cell.O {
    background: var(--t-yellow);
}

.cell.S {
    background: var(--t-green);
}

.cell.T {
    background: var(--t-purple);
}

.cell.Z {
    background: var(--t-red);
}

/* 3D effect */
.cell.I,
.cell.J,
.cell.L,
.cell.O,
.cell.S,
.cell.T,
.cell.Z {
    box-shadow:
        inset 2px 2px 0 rgba(255, 255, 255, 0.25),
        inset -2px -2px 0 rgba(0, 0, 0, 0.25);
}

/* ─── Ghost Piece ─── */
.ghost {
    opacity: 0.25;
    filter: brightness(0.7);
}

/* ─── Line Clear Animation ─── */
.clearing {
    animation: lineClear 0.35s ease forwards;
}

@keyframes lineClear {
    0% {
        transform: scale(1);
        opacity: 1;
        filter: brightness(1);
    }

    40% {
        transform: scale(1.1);
        opacity: 1;
        filter: brightness(1.6);
    }

    100% {
        transform: scale(0.6);
        opacity: 0;
    }
}

/* ─── Pause Button ─── */
.pause-btn {
    position: fixed;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text);
    font-size: 18px;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    cursor: pointer;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.pause-btn:hover {
    background: rgba(255, 255, 255, 0.14);
}

/* ─── Overlays ─── */
.game-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    backdrop-filter: blur(6px);
}

.overlay-content {
    background: var(--surface2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 36px 32px;
    text-align: center;
    max-width: 320px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.overlay-content h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--accent), var(--teal));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.final-stats {
    display: flex;
    justify-content: center;
    gap: 36px;
    margin-bottom: 28px;
}

.stat-label {
    font-size: 11px;
    color: var(--dim);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--teal);
}

/* ─── Buttons ─── */
.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 14px;
    margin: 6px 0;
    border: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #7c4dff);
    color: #000;
}

.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-tertiary {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--dim);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 8px 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-tertiary:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    transform: translateY(-1px);
}

.btn-tertiary.muted {
    color: var(--red);
    opacity: 0.6;
    background: rgba(207, 102, 121, 0.05);
    border-color: rgba(207, 102, 121, 0.2);
}

.btn-tertiary svg {
    transition: transform 0.2s ease;
}

.btn-tertiary:active svg {
    transform: scale(0.9);
}

/*  RECORDS CUSTOM STYLES  */
.records-modal {
    max-width: 380px !important;
    position: relative;
    overflow: visible !important;
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: none;
    border: none;
    color: var(--accent);
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--accent);
    color: #000;
}

.records-title {
    text-align: center;
    font-size: 26px !important;
    margin-bottom: 24px !important;
}

.records-section {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 20px !important;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: left;
}

.records-section h3 {
    margin-top: 0 !important;
    margin-bottom: 12px !important;
    font-size: 13px !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
    color: var(--accent) !important;
    -webkit-text-fill-color: initial !important;
}

.record-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.record-card {
    background: rgba(187, 134, 252, 0.08);
    border: 1px solid rgba(187, 134, 252, 0.15);
    padding: 14px;
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    transition: all 0.2s;
}

.record-card:hover {
    background: rgba(187, 134, 252, 0.12);
    transform: translateY(-2px);
}

.record-card.global {
    background: rgba(3, 218, 198, 0.08);
    border-color: rgba(3, 218, 198, 0.2);
}

.record-card.global:hover {
    background: rgba(3, 218, 198, 0.12);
}

.rc-label {
    font-size: 11px;
    color: var(--dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.rc-value {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    font-variant-numeric: tabular-nums;
}

.record-card.global .rc-value {
    color: var(--teal);
}

.rc-message {
    display: block;
    font-size: 12px;
    color: var(--dim);
    font-style: italic;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    width: 100%;
}

.connection-status {
    font-size: 11px;
    text-align: center;
    margin-top: 12px;
    color: var(--dim);
    font-style: italic;
    opacity: 0.7;
}

/* 🏆 Popup Record 🏆 */
#recordMessagePopup .overlay-content {
    background: rgba(22, 22, 31, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(168, 85, 247, 0.2);
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#recordMessagePopup .overlay-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

#recordMessagePopup h2 {
    color: var(--accent);
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 12px;
    text-shadow: 0 0 15px rgba(168, 85, 247, 0.4);
}

#recordMessagePopup p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--dim);
    margin-bottom: 24px;
}

.message-input-wrapper {
    margin-bottom: 30px;
    position: relative;
}

#recordMsgInput {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 16px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 16px;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#recordMsgInput:focus {
    background: rgba(255, 255, 255, 0.06);
    border-bottom-color: var(--accent);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.char-counter {
    position: absolute;
    bottom: -22px;
    right: 8px;
    font-size: 11px;
    font-weight: 600;
    color: var(--dim);
    letter-spacing: 0.5px;
}

#saveRecordMsgBtn {
    background: linear-gradient(135deg, var(--accent), #7e22ce);
    box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
    border: none;
    color: white;
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}

#saveRecordMsgBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(168, 85, 247, 0.4);
    filter: brightness(1.1);
}