/**
 * =====================================================
 * AGRICONNECT - DESIGN SYSTEM MODERNE
 * =====================================================
 * Variables CSS et styles de base "Mobile First"
 * Inspiré: Uber Eats, Revolut, Banking Apps Modernes
 */

/* =====================================================
   1. VARIABLES CSS GLOBALES
   ===================================================== */
:root {
    /* --- Couleurs Primaires --- */
    --color-primary: #10B981;           /* Vert Émeraude Profond */
    --color-primary-light: #34D399;     /* Vert clair */
    --color-primary-dark: #059669;      /* Vert foncé */
    --color-primary-50: #ECFDF5;        /* Vert très léger (backgrounds) */
    --color-primary-100: #D1FAE5;
    --color-primary-500: #10B981;
    --color-primary-600: #059669;
    --color-primary-700: #047857;

    /* --- Couleurs Secondaires (Actions/CTA) --- */
    --color-secondary: #F59E0B;         /* Orange Terre */
    --color-secondary-light: #FBBF24;
    --color-secondary-dark: #D97706;
    --color-secondary-50: #FFFBEB;
    --color-secondary-500: #F59E0B;
    --color-secondary-600: #D97706;

    /* --- Couleurs Neutres --- */
    --color-white: #FFFFFF;
    --color-off-white: #F9FAFB;         /* Fond principal (pas blanc pur) */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;          /* Fond secondaire */
    --color-gray-200: #E5E7EB;          /* Bordures légères */
    --color-gray-300: #D1D5DB;          /* Bordures */
    --color-gray-400: #9CA3AF;          /* Texte désactivé */
    --color-gray-500: #6B7280;          /* Texte secondaire */
    --color-gray-600: #4B5563;          /* Texte normal */
    --color-gray-700: #374151;          /* Texte important */
    --color-gray-800: #1F2937;          /* Titres */
    --color-gray-900: #111827;          /* Texte principal */

    /* --- Couleurs Sémantiques --- */
    --color-success: #10B981;
    --color-success-light: #D1FAE5;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-danger: #EF4444;
    --color-danger-light: #FEE2E2;
    --color-info: #3B82F6;
    --color-info-light: #DBEAFE;

    /* --- Couleurs par Rôle --- */
    --color-farmer: #10B981;            /* Agriculteur = Vert */
    --color-farmer-light: #D1FAE5;
    --color-buyer: #3B82F6;             /* Acheteur = Bleu */
    --color-buyer-light: #DBEAFE;
    --color-admin: #8B5CF6;             /* Admin = Violet */
    --color-admin-light: #EDE9FE;

    /* --- Typographie --- */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-display: 'Poppins', var(--font-family);

    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* --- Espacements --- */
    --spacing-0: 0;
    --spacing-1: 0.25rem;         /* 4px */
    --spacing-2: 0.5rem;          /* 8px */
    --spacing-3: 0.75rem;         /* 12px */
    --spacing-4: 1rem;            /* 16px */
    --spacing-5: 1.25rem;         /* 20px */
    --spacing-6: 1.5rem;          /* 24px */
    --spacing-8: 2rem;            /* 32px */
    --spacing-10: 2.5rem;         /* 40px */
    --spacing-12: 3rem;           /* 48px */
    --spacing-16: 4rem;           /* 64px */
    --spacing-20: 5rem;           /* 80px */

    /* --- Rayons de Bordure --- */
    --radius-none: 0;
    --radius-sm: 0.375rem;        /* 6px */
    --radius-md: 0.5rem;          /* 8px */
    --radius-lg: 0.75rem;         /* 12px */
    --radius-xl: 1rem;            /* 16px - Cartes principales */
    --radius-2xl: 1.5rem;         /* 24px - Boutons larges */
    --radius-full: 9999px;        /* Cercle/Pilule */

    /* --- Ombres (Soft Shadows) --- */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Ombres colorées pour cartes interactives */
    --shadow-primary: 0 4px 14px 0 rgba(16, 185, 129, 0.25);
    --shadow-secondary: 0 4px 14px 0 rgba(245, 158, 11, 0.25);

    /* --- Transitions --- */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-bounce: 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* --- Z-Index --- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;

    /* --- Layout --- */
    --header-height: 64px;
    --sidebar-width: 280px;
    --bottom-nav-height: 70px;
    --container-max-width: 1200px;
    --content-max-width: 800px;
}

/* =====================================================
   2. RESET & BASE STYLES
   ===================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-gray-900);
    background-color: var(--color-gray-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

/* =====================================================
   3. TYPOGRAPHIE
   ===================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--color-gray-600);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* =====================================================
   4. COMPOSANTS: BOUTONS
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    -webkit-tap-highlight-color: transparent;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Bouton Primary (Vert) */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Bouton Secondary (Orange) - CTA */
.btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-secondary);
}

.btn-secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
}

/* Bouton Outline */
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Bouton Ghost */
.btn-ghost {
    background: transparent;
    color: var(--color-gray-700);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-gray-100);
}

/* Bouton Danger */
.btn-danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, #DC2626 100%);
    color: var(--color-white);
}

/* Tailles de boutons */
.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-lg);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-2xl);
}

.btn-full {
    width: 100%;
}

/* Bouton avec icône seulement */
.btn-icon {
    padding: var(--spacing-3);
    border-radius: var(--radius-full);
}

/* =====================================================
   5. COMPOSANTS: CARTES
   ===================================================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-interactive {
    cursor: pointer;
}

.card-interactive:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-body {
    padding: var(--spacing-5);
}

.card-header {
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--color-gray-100);
}

.card-footer {
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--color-gray-100);
    background: var(--color-gray-50);
}

/* Carte Statistique */
.stat-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xl);
}

.stat-card .stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* =====================================================
   6. COMPOSANTS: FORMULAIRES
   ===================================================== */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-4);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-50);
}

.form-input::placeholder {
    color: var(--color-gray-400);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-danger);
}

.form-input.error:focus {
    box-shadow: 0 0 0 4px var(--color-danger-light);
}

.form-error {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-danger);
}

.form-hint {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* Input avec icône */
.input-with-icon {
    position: relative;
}

.input-with-icon .input-icon {
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-400);
    pointer-events: none;
}

.input-with-icon .form-input {
    padding-left: calc(var(--spacing-4) + 24px + var(--spacing-2));
}

/* Input avec préfixe (pour téléphone) */
.input-with-prefix {
    display: flex;
    align-items: stretch;
}

.input-prefix {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-4);
    background: var(--color-gray-100);
    border: 2px solid var(--color-gray-200);
    border-right: none;
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.input-with-prefix .form-input {
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
}

/* =====================================================
   7. COMPOSANTS: BADGES
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

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

.badge-primary {
    background: var(--color-primary-50);
    color: var(--color-primary-dark);
}

.badge-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

/* =====================================================
   8. COMPOSANTS: ALERTES
   ===================================================== */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
}

.alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.alert-success {
    background: var(--color-success-light);
    color: var(--color-primary-dark);
}

.alert-warning {
    background: var(--color-warning-light);
    color: var(--color-secondary-dark);
}

.alert-danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.alert-info {
    background: var(--color-info-light);
    color: var(--color-info);
}

/* =====================================================
   9. COMPOSANTS: AVATARS
   ===================================================== */
.avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary-100);
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    overflow: hidden;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-sm { width: 32px; height: 32px; font-size: var(--font-size-xs); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--font-size-lg); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--font-size-2xl); }

/* =====================================================
   10. LAYOUT: GRILLES
   ===================================================== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.grid {
    display: grid;
    gap: var(--spacing-4);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 1024px) {
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* =====================================================
   11. UTILITAIRES
   ===================================================== */
/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

/* Textes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.text-muted { color: var(--color-gray-500); }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }

/* Spacing */
.m-0 { margin: 0; }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.p-0 { padding: 0; }
.p-2 { padding: var(--spacing-2); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Visibilité responsive */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}

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

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

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

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

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

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-fadeIn { animation: fadeIn var(--transition-slow) ease-out; }
.animate-fadeInUp { animation: fadeInUp var(--transition-slow) ease-out; }
.animate-slideInRight { animation: slideInRight var(--transition-slow) ease-out; }
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-bounce { animation: bounce 1s infinite; }

/* =====================================================
   13. LOADER / SPINNER
   ===================================================== */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 40px; height: 40px; border-width: 4px; }

/* Skeleton loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-gray-200) 0%,
        var(--color-gray-100) 50%,
        var(--color-gray-200) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

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

/* =====================================================
   14. BOUTON FLOTTANT (FAB)
   ===================================================== */
.fab {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--spacing-4));
    right: var(--spacing-4);
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-xl), var(--shadow-secondary);
    cursor: pointer;
    font-size: var(--font-size-xl);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
}

.fab:active {
    transform: scale(0.95);
}

@media (min-width: 769px) {
    .fab {
        bottom: var(--spacing-6);
        right: var(--spacing-6);
    }
}

/* =====================================================
   15. DIVIDERS
   ===================================================== */
.divider {
    height: 1px;
    background: var(--color-gray-200);
    margin: var(--spacing-4) 0;
}

.divider-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
}

.divider-text::before,
.divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-gray-200);
}

/* =====================================================
   16. EMPTY STATES
   ===================================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12) var(--spacing-6);
    text-align: center;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-3xl);
    color: var(--color-gray-400);
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-2);
}

.empty-state-text {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
    max-width: 300px;
}