/* ========================================
   VARIABLES CSS GLOBALES - FEI-CV
   ======================================== */
:root {
    /* Couleurs principales FEI */
    --primary-color: #9c5096;
    --accent-color: #00f5ca;
    --dark-bg: #111111;
    --light-bg: #ffffff;
    --card-bg: #1a1a1a;
    --text-light: #f5f5f5;
    --text-dark: #333333;
    --text-muted: #a0a0a0;
    --header-bg: rgba(17, 17, 17, 0.95);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --border-radius-small: 8px;
    
    /* Couleurs d'état */
    --success-color: #00f5ca;
    --error-color: #ff6b6b;
    --warning-color: #ffa726;
    --info-color: #42a5f5;
    
    /* Typographie */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Espacement mobile-first */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Layout mobile */
    --container-padding: 1rem;
    --header-height: 60px;
    --bottom-nav-height: 70px;
    --content-max-width: 480px;
}

/* ========================================
   RESET ET BASE MOBILE
   ======================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh; /* Support pour les navigateurs modernes */
    overflow-x: hidden;
    font-size: var(--font-size-base);
}

/* ========================================
   LAYOUT PRINCIPAL MOBILE
   ======================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
    max-width: var(--content-max-width);
    margin: 0 auto;
    background: var(--dark-bg);
    position: relative;
}

.app-header {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--content-max-width);
    height: var(--header-height);
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--container-padding);
}

.app-content {
    flex: 1;
    padding-top: var(--header-height);
    padding-bottom: var(--bottom-nav-height);
    min-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
    min-height: calc(100dvh - var(--header-height) - var(--bottom-nav-height));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.app-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: var(--content-max-width);
    height: var(--bottom-nav-height);
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: var(--spacing-sm) var(--container-padding);
}

/* ========================================
   COMPOSANTS DE BASE
   ======================================== */

/* Logo FEI */
.fei-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.fei-logo .fei { color: var(--text-light); }
.fei-logo .separator { color: var(--accent-color); margin: 0 2px; }
.fei-logo .cv { color: var(--text-light); }

/* Boutons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px; /* Minimum touch target */
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--dark-bg);
}

.btn-primary:hover:not(:disabled) {
    background: #00d4b5;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--accent-color);
    color: var(--dark-bg);
}

.btn-ghost {
    background: transparent;
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.05);
}

.btn-danger {
    background: var(--error-color);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #ff5252;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-lg);
    min-height: 52px;
}

.btn-full {
    width: 100%;
}

/* Cartes */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow);
}

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

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-light);
    margin: 0;
}

.card-content {
    color: var(--text-muted);
    line-height: 1.6;
}

/* Formulaires */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    color: var(--text-light);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    transition: border-color 0.2s ease, background-color 0.2s ease;
    min-height: 44px;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: var(--accent-color);
    background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder, .form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-error {
    color: var(--error-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

/* Navigation en bas */
.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: 500;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    border-radius: var(--border-radius-small);
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.nav-item.active {
    color: var(--accent-color);
    background: rgba(0, 245, 202, 0.1);
}

.nav-item:hover {
    color: var(--text-light);
    background: rgba(255, 255, 255, 0.05);
}

.nav-icon {
    font-size: 1.25rem;
}

/* ========================================
   COMPOSANTS SPÉCIALISÉS
   ======================================== */

/* Avatar */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--dark-bg);
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
    text-align: center;
    line-height: 1;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.avatar-lg {
    width: 80px;
    height: 80px;
    font-size: var(--font-size-xl);
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--accent-color);
    color: var(--dark-bg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-secondary {
    background: var(--text-muted);
    color: var(--text-light);
}

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

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

.badge-warning {
    background: var(--warning-color);
    color: var(--dark-bg);
}

/* Liste */
.list {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.list-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    min-height: 64px;
    text-decoration: none;
    color: inherit;
    transition: background-color 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.list-item:last-child {
    border-bottom: none;
}

.list-item:hover, .list-item:active {
    background: rgba(255, 255, 255, 0.03);
}

.list-item-content {
    flex: 1;
    min-width: 0;
}

.list-item-title {
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.list-item-subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.list-item-action {
    margin-left: var(--spacing-md);
    flex-shrink: 0;
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.list-item-action .btn {
    font-size: var(--font-size-sm);
    padding: 0.4rem 0.8rem;
    min-width: auto;
    white-space: nowrap;
}

.list-item-action .btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: var(--font-size-xs);
}

/* ========================================
   ANIMATIONS ET TRANSITIONS
   ======================================== */
.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   UTILITAIRES
   ======================================== */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* ========================================
   LOADING ET ÉTATS
   ======================================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
}

.loading-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, var(--card-bg) 25%, rgba(255,255,255,0.05) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--border-radius-small);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ========================================
   RESPONSIVE POUR TABLETTES
   ======================================== */
@media (min-width: 768px) {
    :root {
        --content-max-width: 600px;
        --container-padding: 1.5rem;
    }
    
    .app-content {
        padding-left: var(--container-padding);
        padding-right: var(--container-padding);
    }
}

/* ========================================
   SUPPORT POUR LES ÉCRANS HAUTE DENSITÉ
   ======================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .btn, .form-input, .card {
        border-width: 0.5px;
    }
}