/**
 * SwissApp Invoices - Main Styles
 * Facturation professionnelle suisse
 */

/* =====================================================
   VARIABLES & THEME
   ===================================================== */
:root {
    --primary: #14B8A6;
    --primary-dark: #0D9488;
    --primary-light: #5EEAD4;
    --secondary: #1f2937;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    --bg-primary: #f9fafb;
    --bg-card: #ffffff;
    --border-color: #e5e7eb;
    
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    
    --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-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.25);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover { 
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(20, 184, 166, 0.35);
}

.btn-primary:disabled { 
    background: #D1D5DB; 
    cursor: not-allowed; 
    transform: none;
}

.btn-secondary {
    background-color: #F3F4F6;
    color: var(--secondary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover { 
    background-color: #E5E7EB; 
}

.btn-danger {
    background-color: var(--danger);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-weight: 500;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* =====================================================
   CARDS
   ===================================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* =====================================================
   FORMS & INPUTS
   ===================================================== */
.input-field {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    transition: all 0.2s;
    background: white;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.form-group {
    margin-bottom: 1rem;
}

/* =====================================================
   SIDEBAR NAVIGATION
   ===================================================== */
.sidebar {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-right: 1px solid #E2E8F0;
}

.sidebar-item {
    padding: 0.75rem 1rem;
    margin: 0.25rem 0.5rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    font-weight: 500;
    color: #64748B;
}

.sidebar-item:hover {
    background: rgba(20, 184, 166, 0.1);
    color: var(--primary);
}

.sidebar-item.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
}

.sidebar-icon {
    width: 1.5rem;
    margin-right: 0.75rem;
    text-align: center;
}

/* =====================================================
   MODALS / POPUPS
   ===================================================== */
.popup-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    backdrop-filter: blur(4px);
}

.popup-container {
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.popup-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.popup-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.popup-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* =====================================================
   STATUS BADGES
   ===================================================== */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.status-draft { background: #f3f4f6; color: #374151; }
.status-sent { background: #dbeafe; color: #1d4ed8; }
.status-paid { background: #dcfce7; color: #15803d; }
.status-overdue { background: #fee2e2; color: #dc2626; }
.status-accepted { background: #dcfce7; color: #15803d; }
.status-rejected { background: #fee2e2; color: #dc2626; }
.status-cancelled { background: #f3f4f6; color: #6b7280; }

/* =====================================================
   TABLES
   ===================================================== */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: 600;
    color: var(--text-secondary);
    background: #f9fafb;
}

.data-table tbody tr:hover {
    background: #f9fafb;
}

/* =====================================================
   SCROLLBAR
   ===================================================== */
.scrollbar-custom::-webkit-scrollbar {
    width: 6px;
}

.scrollbar-custom::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.scrollbar-custom::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-fade-in { animation: fadeIn 0.5s ease-out forwards; }
.animate-fade-in-up { animation: fadeInUp 0.6s ease-out forwards; }
.animate-scale-in { animation: scaleIn 0.4s ease-out forwards; }
.animate-spin { animation: spin 1s linear infinite; }

/* =====================================================
   LOADING STATES
   ===================================================== */
.loading-spinner {
    width: 3rem;
    height: 3rem;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

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

/* =====================================================
   UTILITIES
   ===================================================== */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.bg-primary { background-color: var(--primary); }
.bg-primary-light { background-color: rgba(20, 184, 166, 0.1); }

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -16rem;
        top: 0;
        height: 100vh;
        z-index: 40;
        transition: left 0.3s ease;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .popup-container {
        width: 95%;
        max-height: 95vh;
    }
}