:root {
    /* Couleurs principales */
    --primary-color: #2196F3;
    --primary-dark: #1976D2;
    --secondary-color: #FFC107;
    --accent-color: #4CAF50;
    --success-color: #4CAF50;
    --error-color: #F44336;
    --danger-color: #F44336;
    --warning-color: #FF9800;
    --neutral-color: #6d6d6d;
    
    /* État des boutons */
    --button-off: #6d6d6d;
    --button-on: #2196F3;
    --button-eco: #4CAF50;
    --button-turbo: #FF5722;
    --button-hover: #1976D2;
    
    /* Couleurs de fond et texte */
    --bg-color: #f5f5f5;
    --bg-primary: #f5f5f5;
    --bg-dark: #ffffff;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-color: #333333;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    
    /* Ombres */
    --shadow-light: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 8px 16px rgba(0,0,0,0.2);
    
    /* Border radius */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Couleurs de statut */
    --status-online: #4CAF50;
    --status-offline: #F44336;
    --status-connecting: #FF9800;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --bg-primary: #121212;
        --bg-dark: #1e1e1e;
        --bg-secondary: #1e1e1e;
        --bg-card: #1e1e1e;
        --text-color: #ffffff;
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --border-color: #333333;
    }
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--bg-color) 0%, #e3f2fd 100%);
    min-height: 100vh;
}

/* Layout principal */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--bg-dark);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-medium);
    text-align: center;
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 2.2em;
    font-weight: 600;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 0;
}

/* Layout multi-appareils */
.multi-device-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.device-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.device-card.online {
    border-color: var(--success-color);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.15);
}

.device-card.offline {
    border-color: var(--danger-color);
    opacity: 0.7;
}

.device-card.offline .device-controls {
    pointer-events: none;
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.device-header h2 {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.device-status-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    position: relative;
}

.status-indicator.online {
    background: var(--status-online);
    animation: pulse-online 2s infinite;
}

.status-indicator.offline {
    background: var(--status-offline);
}

.status-indicator.connecting {
    background: var(--status-connecting);
    animation: pulse-connecting 1.5s infinite;
}

@keyframes pulse-online {
    0% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7); }
    70% { box-shadow: 0 0 0 8px rgba(76, 175, 80, 0); }
    100% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
}

@keyframes pulse-connecting {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.connection-text {
    font-size: 12px;
    font-weight: 500;
}

.temp-display-card {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    font-weight: 600;
}

.temp-real {
    color: var(--primary-color);
}

.temp-target {
    color: var(--secondary-color);
}

/* Contrôles mini */
.device-controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.control-section-mini {
    margin-bottom: 0;
}

.control-section-mini h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    text-align: center;
}

.mode-controls-mini {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 4px;
}

.btn-mode-mini {
    padding: 8px 4px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
}

.btn-mode-mini:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-mode-mini.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-mode-mini.active[data-mode="off"] {
    background: var(--button-off);
    border-color: var(--button-off);
}

.temp-controls-mini {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.btn-temp-mini {
    width: 36px;
    height: 36px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 18px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-temp-mini:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.temp-display-mini {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    min-width: 70px;
    text-align: center;
}

.controls-row-mini {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.fan-controls-mini, .swing-controls-mini {
    display: flex;
    gap: 4px;
}

.btn-fan-mini, .btn-swing-mini {
    flex: 1;
    padding: 6px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 12px;
    font-weight: 600;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-fan-mini:hover, .btn-swing-mini:hover {
    border-color: var(--warning-color);
    transform: translateY(-1px);
}

.btn-fan-mini.active, .btn-swing-mini.active {
    border-color: var(--warning-color);
    background: var(--warning-color);
    color: white;
}

.preset-controls-mini {
    display: flex;
    gap: 8px;
}

.btn-preset-mini {
    flex: 1;
    padding: 8px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-preset-mini:hover {
    transform: translateY(-1px);
}

.btn-preset-mini.active[data-preset="none"] {
    border-color: var(--neutral-color);
    background: var(--neutral-color);
    color: white;
}

.btn-preset-mini.active[data-preset="eco"] {
    border-color: var(--success-color);
    background: var(--success-color);
    color: white;
}

.btn-preset-mini.active[data-preset="turbo"] {
    border-color: var(--danger-color);
    background: var(--danger-color);
    color: white;
}

/* Actions globales */
.global-actions {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.global-actions h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    text-align: center;
    color: var(--text-primary);
}

.global-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.btn-global {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
}

.btn-global:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Notifications */
.notifications {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.notification {
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    min-width: 300px;
    max-width: 400px;
    box-shadow: var(--shadow-medium);
    transform: translateX(100%);
    animation: slideIn 0.3s ease forwards;
    word-wrap: break-word;
}

.notification.success {
    background: var(--accent-color);
}

.notification.error {
    background: var(--error-color);
}

.notification.warning {
    background: var(--warning-color);
}

.notification.info {
    background: var(--primary-color);
}

@keyframes slideIn {
    to {
        transform: translateX(0);
    }
}

/* Responsive design */
@media (max-width: 1200px) {
    .multi-device-layout {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .multi-device-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .device-card {
        padding: 16px;
    }
    
    .mode-controls-mini {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .controls-row-mini {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .global-controls {
        grid-template-columns: 1fr;
    }
    
    .btn-mode-mini {
        padding: 6px 4px;
        font-size: 14px;
        min-height: 36px;
    }
    
    .temp-display-mini {
        font-size: 18px;
        min-width: 60px;
    }
    
    .btn-temp-mini {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 16px;
    }
    
    header h1 {
        font-size: 1.8em;
    }
    
    .device-card {
        padding: 12px;
    }
    
    .mode-controls-mini {
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
    }
    
    .temp-controls-mini {
        gap: 8px;
    }
    
    .temp-display-mini {
        font-size: 16px;
        min-width: 50px;
    }
    
    .btn-temp-mini {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }
    
    .notification {
        min-width: 280px;
        max-width: 320px;
    }
}

/* Animation au chargement */
.device-card {
    animation: fadeInUp 0.6s ease forwards;
}

.device-card:nth-child(2) {
    animation-delay: 0.1s;
}

.device-card:nth-child(3) {
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* États des boutons avec couleurs spécifiques */
.btn-mode-mini.active[data-mode="cool"] {
    background: #0ea5e9;
    border-color: #0ea5e9;
}

.btn-mode-mini.active[data-mode="heat"] {
    background: #f97316;
    border-color: #f97316;
}

.btn-mode-mini.active[data-mode="dry"] {
    background: #8b5cf6;
    border-color: #8b5cf6;
}

.btn-mode-mini.active[data-mode="fan_only"] {
    background: #06b6d4;
    border-color: #06b6d4;
}

.btn-mode-mini.active[data-mode="auto"] {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: #333;
}

/* Focus pour accessibilité */
.btn-mode-mini:focus,
.btn-temp-mini:focus,
.btn-fan-mini:focus,
.btn-swing-mini:focus,
.btn-preset-mini:focus,
.btn-global:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Styles pour le viewer intégré (overlay) et affichage des tailles */
#embeddedFileViewer { display:none; position:fixed; inset:0; z-index:4000; background:rgba(0,0,0,0.95); color:#fff; overflow:auto; padding:18px; font-family:monospace; }
#embeddedFileViewer .viewer-header { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:12px; }
#embeddedFileViewer .viewer-title { font-size:1.05rem; font-weight:600; }
#embeddedFileViewer .viewer-meta { font-size:0.95rem; color:rgba(255,255,255,0.85); }
#embeddedFileViewer .viewer-back { background:#222; color:#fff; border:1px solid #444; padding:6px 10px; border-radius:6px; cursor:pointer; }
#embeddedFileViewer pre { white-space:pre-wrap; word-break:break-word; background:transparent; color:#eaeaea; margin:0; }
.size-number { font-weight:700; margin-right:6px; }
.size-unit { opacity:0.8; }

/* Admin controls (reboot / format) */
.admin-controls { display:flex; gap:0.5rem; align-items:center; }
.admin-btn {
  background:#ff7043; color:#fff; border:none; padding:0.45rem 0.7rem;
  border-radius:6px; cursor:pointer; font-size:0.9rem;
}
.admin-btn.secondary { background:#9e9e9e; }
.admin-btn.danger { background:#e53935; }
.admin-btn:disabled { opacity:0.6; cursor:not-allowed; }