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

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --gold: #fbbf24;

    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;

    --border: rgba(148, 163, 184, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    line-height: 1.6;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(148, 163, 184, 0.05) 1px, transparent 0);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

#header {
    text-align: center;
    margin-bottom: 30px;
    width: 100%;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

#header h1 {
    font-size: 2.25em;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1em;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.info-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

#code-display {
    font-size: 1.1em;
    color: var(--gold);
    background: rgba(251, 191, 36, 0.1);
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid rgba(251, 191, 36, 0.2);
    font-weight: 600;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.05em;
}

#status {
    font-size: 0.875em;
    padding: 8px 14px;
    border-radius: 8px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

#status.disconnected {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
}

#status.disconnected .status-dot {
    background: var(--error);
}

.action-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 9px 16px;
    font-size: 0.875em;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.action-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

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

#lang-selector {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 9px 14px;
    font-size: 0.875em;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    outline: none;
}

#lang-selector:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
}

#main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    position: relative;
    z-index: 1;
    gap: 30px;
}

#bingo-container {
    display: grid;
    grid-template-columns: repeat(5, 160px);
    grid-template-rows: repeat(5, 160px);
    gap: 10px;
    background: rgba(30, 41, 59, 0.3);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.cell {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 16px;
    cursor: pointer;
    user-select: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    line-height: 1.4;
}

/* Image en background au hover sur desktop */
@media (min-width: 769px) {
    .cell[data-image]::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: var(--cell-image);
        background-size: 100%;
        background-position: center;
        background-repeat: no-repeat;
        opacity: 0;
        transition: opacity 0.3s;
        filter: brightness(0.6) saturate(0.7);
    }

    .cell[data-image]:hover::before {
        opacity: 0.12;
    }

    .cell[data-image].checked::before {
        opacity: 0.15;
        filter: brightness(0.8) saturate(1);
    }
}

.cell:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.cell.checked {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: white;
    font-weight: 600;
    border-color: var(--primary);
}

.cell.completed-line {
    border: 2px solid var(--gold);
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.3);
    animation: pulse-line 2s infinite;
}

@keyframes pulse-line {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.02);
    }
}

.cell.full-bingo {
    background: linear-gradient(135deg, var(--gold), #fcd34d);
    color: var(--bg-primary);
    border-color: var(--gold);
    animation: celebrate 0.6s;
}

@keyframes celebrate {

    0%,
    100% {
        transform: scale(1) rotate(0);
    }

    25% {
        transform: scale(1.05) rotate(-2deg);
    }

    75% {
        transform: scale(1.05) rotate(2deg);
    }
}

#completion-banner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    background: linear-gradient(135deg, var(--gold), #fcd34d);
    color: var(--bg-primary);
    padding: 40px 60px;
    border-radius: 16px;
    font-size: 3em;
    font-weight: 900;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    z-index: 1000;
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

#completion-banner.show {
    transform: translate(-50%, -50%) scale(1);
}

.how-it-works {
    max-width: 700px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-top: 10px;
    margin: 10px 0 30px 0;
}

.how-it-works h2 {
    font-size: 1.5em;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.how-it-works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.feature-icon {
    font-size: 1.5em;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1em;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.feature-content p {
    font-size: 0.875em;
    color: var(--text-secondary);
    line-height: 1.5;
}

#error-message {
    text-align: center;
    padding: 40px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 12px;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

#error-message h2 {
    color: var(--error);
    margin-bottom: 16px;
    font-size: 1.5em;
    display: flex;
    align-items: center;
    gap: 8px;
}

#error-message button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1em;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

#error-message button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

#version-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 20px;
    animation: fadeIn 0.2s;
}

#version-modal.show {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 1.75em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.close-modal {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.75em;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s;
}

.close-modal:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.version-entry {
    margin-bottom: 24px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
}

.version-entry.latest {
    border-left: 3px solid var(--success);
}

.version-entry h3 {
    color: var(--primary);
    margin-bottom: 8px;
    font-size: 1.25em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.version-entry.latest h3 {
    color: var(--success);
}


.version-date {
    color: var(--text-muted);
    font-size: 0.875em;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.version-entry ul {
    list-style: none;
    padding: 0;
}

.version-entry li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9375em;
}

.version-entry li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.version-entry.latest li::before {
    color: var(--success);
}

footer {
    margin-top: auto;
    padding: 30px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875em;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
}

footer a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover {
    color: var(--primary-hover);
}

.footer-disclaimer {
    font-size: 0.875em;
    opacity: 0.8;
}

.version-link {
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s;
    padding: 8px 16px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    font-size: 0.875em;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.version-link:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
    transform: translateY(-1px);
}

body.overlay {
    padding: 0;
    background: transparent;
}

body.overlay::before,
body.overlay #header,
body.overlay .how-it-works,
body.overlay footer,
body.overlay #completion-banner {
    display: none;
}

body.overlay #main-content {
    min-height: auto;
}

body.overlay #bingo-container {
    grid-template-columns: repeat(5, 100px);
    grid-template-rows: repeat(5, 100px);
    gap: 6px;
    padding: 12px;
    background: transparent;
}

body.overlay .cell {
    font-size: 11px;
    padding: 6px;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(8px);
}

body.overlay .cell.checked {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
}

@media (max-width: 900px) {
    #bingo-container {
        grid-template-columns: repeat(5, 120px);
        grid-template-rows: repeat(5, 120px);
        gap: 8px;
        padding: 16px;
    }

    .cell {
        font-size: 13px;
        padding: 12px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    #header h1 {
        font-size: 1.75em;
    }

    .subtitle {
        font-size: 0.9375em;
    }

    #bingo-container {
        grid-template-columns: repeat(5, 70px);
        grid-template-rows: repeat(5, 70px);
        gap: 5px;
        padding: 12px;
    }

    .cell {
        font-size: 11px;
        padding: 8px;
    }

    .cell[data-image]::before {
        display: none;
    }

    #completion-banner {
        font-size: 2em;
        padding: 30px 40px;
    }

    .info-bar {
        gap: 8px;
    }

    #code-display,
    #status,
    .action-btn,
    #lang-selector {
        font-size: 0.8125em;
        padding: 8px 12px;
    }

    .how-it-works {
        padding: 20px;
    }

    .how-it-works h2 {
        font-size: 1.25em;
    }

    .how-it-works-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .modal-content {
        padding: 24px;
        margin: 10px;
    }
}

@media (max-width: 480px) {
    #header h1 {
        font-size: 1.5em;
    }

    #bingo-container {
        grid-template-columns: repeat(5, 60px);
        grid-template-rows: repeat(5, 60px);
        gap: 4px;
        padding: 10px;
    }

    .cell {
        font-size: 10px;
        padding: 6px;
    }

    #completion-banner {
        font-size: 1.5em;
        padding: 20px 30px;
    }
}

.modal-content::-webkit-scrollbar {
    width: 8px;
}

.modal-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

.copy-feedback {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--success);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1001;
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-feedback.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}