/* ===== COMMON STYLES ===== */
/* Styles partagés entre toutes les pages */

/* ===== CSS VARIABLES ===== */
:root {
    /* Palette minimaliste en nuances de gris */
    --primary-color: #2d3748;
    --primary-hover: #1a202c;
    --primary-light: #4a5568;
    --secondary-color: #718096;
    --accent-color: #4299e1;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --bg-hover: #e2e8f0;
    
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    
    --border-color: #e2e8f0;
    --border-radius: 8px;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --error-color: #f56565;
}

/* ===== BASE STYLES ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ===== HEADER COMMON STYLES ===== */
.header,
.demo-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container,
.demo-header .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===== LOGO ===== */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
}

.logo-img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.logo-text {
    color: white;
}

.logo-text p {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.95;
}

/* ===== HEADER CONTROLS ===== */
.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* ===== LANGUAGE SELECTOR ===== */
.language-selector select {
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.language-selector select:hover {
    background: rgba(255, 255, 255, 0.15);
}

.language-selector select option {
    background: white;
    color: var(--text-primary);
}

/* ===== HAMBURGER MENU ===== */
.user-menu {
    position: relative;
}

.hamburger-menu {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    transition: all 0.3s ease;
}

.hamburger-menu span {
    display: block;
    width: 24px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger-menu:hover span {
    background: rgba(255, 255, 255, 0.8);
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ===== DROPDOWN MENU ===== */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    padding: 8px;
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border-radius: 6px;
    font-weight: 500;
}

.menu-item:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.menu-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.menu-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 6px 0;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

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

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

.btn-primary:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

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

.btn-outline:hover {
    background: var(--bg-secondary);
}

.btn-text {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 12px;
}

.btn-text:hover {
    background: var(--bg-secondary);
}

.btn-text.text-error {
    color: var(--error-color);
}

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

.btn-danger:hover {
    background: #e53e3e;
}

/* ===== NOTIFICATIONS ===== */
.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 16px 20px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 400px;
    z-index: 9999;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification.warning {
    border-left: 4px solid var(--warning-color);
}

.notification.error {
    border-left: 4px solid var(--error-color);
}

.notification.info {
    border-left: 4px solid var(--primary-color);
}

.notification-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    margin-left: auto;
}

.notification-close:hover {
    color: var(--text-primary);
}

/* ===== FORMS ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card h3 {
    margin: 0 0 20px 0;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .header-controls {
        gap: 0.5rem;
    }
    
    .logo-text p {
        font-size: 0.8rem;
    }
    
    .hamburger-menu span {
        width: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .notification {
        max-width: calc(100vw - 40px);
        right: 10px;
        bottom: 10px;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }