/* Variables de thème */
:root {
    /* Mode clair - Style Twitter/X */
    --bg-primary: #ffffff;
    --bg-secondary: #f7f9f9;
    --bg-tertiary: #eff3f4;
    --text-primary: #0f1419;
    --text-secondary: #536471;
    --text-muted: #8b98a5;
    --border-color: #eff3f4;
    --accent-color: #1d9bf0;
    --accent-hover: #1a8cd8;
    --card-bg: #ffffff;
    --card-border: #eff3f4;
    --nav-bg: #ffffff;
    --nav-border: #eff3f4;
    --input-bg: #eff3f4;
    --input-border: #eff3f4;
    --shadow: rgba(101, 119, 134, 0.2);
}

[data-theme="dark"] {
    /* Mode sombre avec nuances */
    --bg-primary: #15202b;
    --bg-secondary: #192734;
    --bg-tertiary: #22303c;
    --text-primary: #ffffff;
    --text-secondary: #8899a6;
    --text-muted: #5a6c7d;
    --border-color: #38444d;
    --accent-color: #1d9bf0;
    --accent-hover: #1a8cd8;
    --card-bg: #192734;
    --card-border: #38444d;
    --nav-bg: #15202b;
    --nav-border: #38444d;
    --input-bg: #22303c;
    --input-border: #38444d;
    --shadow: rgba(0, 0, 0, 0.3);
}

/* Styles de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background-color: var(--bg-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.app-container {
    max-width: 100vw;
    height: 100vh;
    height: 100dvh;
    margin: 0 auto;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.app-header {
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    flex-shrink: 0;
}

.app-header h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.app-header small {
    font-size: 13px;
    color: var(--text-muted);
}

.app-content {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 20px;
    background: var(--bg-secondary);
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 2px 8px var(--shadow);
    transition: all 0.3s ease;
}

/* Formulaires */
.form-control {
    width: 100%;
    padding: 14px 16px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    font-size: 16px;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    background: var(--bg-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* Boutons */
.btn-primary {
    background: var(--accent-color);
    color: #fff;
    border: none;
    padding: 14px 24px;
    border-radius: 24px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:active {
    background: var(--accent-hover);
    transform: scale(0.98);
}

/* Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    border-top: 1px solid var(--nav-border);
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
    z-index: 1000;
    box-shadow: 0 -2px 10px var(--shadow);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.nav-item.active {
    color: var(--accent-color);
}

.nav-item:active {
    background: var(--bg-tertiary);
}

/* Toggle Switch */
.theme-toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    margin-bottom: 16px;
}

.theme-toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.theme-toggle-label i {
    font-size: 24px;
    color: var(--accent-color);
}

.toggle-switch {
    position: relative;
    width: 60px;
    height: 32px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--input-border);
    transition: 0.3s;
    border-radius: 32px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--accent-color);
}

input:checked + .toggle-slider:before {
    transform: translateX(28px);
}

/* Responsive */
@media (min-width: 600px) {
    .app-container {
        max-width: 600px;
        border-left: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
    }
}

/* Badges */
.badge {
    font-size: 13px;
    padding: 8px 16px;
    font-weight: 600;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.bg-warning {
    background: #ffc107;
    color: #000;
}

.bg-success {
    background: #28a745;
    color: #fff;
}

.bg-danger {
    background: #f4212e;
    color: #fff;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}