/* ============================================================
   CB FINANCEMENT — FEUILLE DE STYLE FINALE
   Design pro · moderne · UI/UX · accessible · mode sombre
   ============================================================ */

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

/* ============================================================
   2. DESIGN TOKENS — PALETTE CB FINANCEMENT
   Modifiez uniquement --brand-* pour changer toute la palette
   ============================================================ */
:root {
    /* --- Couleurs de marque --- */
    --brand-primary: #0b3d91;        /* bleu marine corporate */
    --brand-accent:  #c9a24b;        /* or / doré */
    --brand-dark:    #0f172a;        /* texte principal */

    /* --- Dérivés --- */
    --primary:         var(--brand-primary);
    --primary-dark:    #082a66;
    --primary-light:   #e6edf9;
    --accent:          var(--brand-accent);
    --text:            var(--brand-dark);
    --text-muted:      #5b6577;
    --border:          #e2e8f0;
    --border-hover:    #cbd5e1;
    --border-focus:    var(--brand-primary);

    /* --- Surfaces --- */
    --card-bg:            rgba(255, 255, 255, 0.85);
    --card-bg-fallback:   #ffffff;
    --card-border:        rgba(255, 255, 255, 0.5);
    --input-bg:           rgba(250, 251, 252, 0.85);
    --input-bg-focus:     #ffffff;

    /* --- Focus ring --- */
    --focus-ring-color: rgba(11, 61, 145, 0.16);
    --focus-ring:       0 0 0 4px var(--focus-ring-color);

    /* --- Ombres --- */
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);

    /* --- Rayons --- */
    --radius:    20px;
    --radius-sm: 12px;

    /* --- Transitions --- */
    --t:      0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow: 0.6s  cubic-bezier(0.16, 1, 0.3, 1);

    /* --- Feedback --- */
    --danger:        #ef4444;
    --danger-bg:     #fef2f2;
    --danger-border: #fecaca;
    --danger-text:   #991b1b;
    --success:       #22c55e;
    --success-bg:    #f0fdf4;
}

/* ============================================================
   3. MODE SOMBRE AUTOMATIQUE
   ============================================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --text:          #e2e8f0;
        --text-muted:    #94a3b8;
        --border:        #1e293b;
        --border-hover:  #334155;

        --card-bg:          rgba(20, 28, 46, 0.75);
        --card-bg-fallback: #141c2e;
        --card-border:      rgba(255, 255, 255, 0.06);
        --input-bg:         rgba(15, 24, 39, 0.85);
        --input-bg-focus:   #182338;
        --primary-light:    #1e3a8a;

        --focus-ring-color: rgba(59, 130, 246, 0.25);

        --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);

        --danger-bg:     #3a1414;
        --danger-border: #7f1d1d;
        --danger-text:   #fca5a5;
        --success-bg:    #0d2e1a;
    }
}

/* ============================================================
   4. BASE
   ============================================================ */
html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    background-color: #eef3fb;
    background-image:
        radial-gradient(circle at 20% 15%, rgba(11, 61, 145, 0.10), transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(201, 162, 75, 0.10), transparent 45%),
        linear-gradient(135deg, #eef3fb 0%, #f8fafc 45%, #fdf8ec 100%);
    background-repeat: no-repeat;
    background-size: 200% 200%, 200% 200%, 100% 100%;
    background-attachment: fixed;
    animation: bgDrift 24s ease-in-out infinite;
}

/* Fallback iOS : évite les bugs de background-attachment */
@supports (-webkit-touch-callout: none) {
    body {
        background-attachment: scroll;
    }
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: #0b1120;
        background-image:
            radial-gradient(circle at 20% 15%, rgba(30, 77, 184, 0.20), transparent 45%),
            radial-gradient(circle at 85% 85%, rgba(212, 179, 94, 0.12), transparent 45%),
            linear-gradient(135deg, #0b1120 0%, #111a2e 45%, #141b2b 100%);
    }
}

/* ============================================================
   5. ACCESSIBILITÉ — FOCUS VISIBLE
   ============================================================ */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ============================================================
   6. BARRE DE PROGRESSION
   ============================================================ */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(148, 163, 184, 0.25);
    z-index: 100;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 2px 2px 0;
    box-shadow: 0 0 12px var(--primary);
}

/* ============================================================
   7. LAYOUT
   ============================================================ */
.page-wrapper {
    position: relative;
    padding: 3rem 1rem 5rem;
}

.container {
    max-width: 820px;
    margin: 0 auto;
}

/* ============================================================
   8. HERO
   ============================================================ */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeUp 0.7s ease-out both;
}

.hero-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(11, 61, 145, 0.12);
}

.hero h1 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.6rem;
    color: var(--text);
}

.hero .subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 520px;
    margin: 0 auto;
}

/* ============================================================
   9. CARTES — glassmorphism + animation au hover
   ============================================================ */
.card {
    position: relative;
    background: var(--card-bg-fallback);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--t), transform var(--t), border-color var(--t);
    animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
    overflow: hidden;
}

/* Application progressive de backdrop-filter si supporté */
.card {
    background: var(--card-bg);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .card {
        background: var(--card-bg-fallback);
    }
}

/* Trait dégradé animé en haut de la carte */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-slow);
    border-radius: var(--radius) var(--radius) 0 0;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.12s; }
.card:nth-child(3) { animation-delay: 0.19s; }
.card:nth-child(4) { animation-delay: 0.26s; }

/* Apparition au scroll (activée via JS IntersectionObserver) */
.card.reveal {
    opacity: 0;
    transform: translateY(30px);
}
.card.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================================
   10. EN-TÊTE DE CARTE
   ============================================================ */
.card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.75rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.95rem;
    box-shadow: 0 6px 16px rgba(11, 61, 145, 0.3);
    transition: transform var(--t), box-shadow var(--t);
}

.card:hover .step-number {
    transform: scale(1.06) rotate(-3deg);
    box-shadow: 0 8px 22px rgba(11, 61, 145, 0.4);
}

.card-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.15rem;
    letter-spacing: -0.01em;
}

.card-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================================================
   11. CHAMPS — floating labels
   ============================================================ */
.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
@media (max-width: 640px) {
    .row {
        grid-template-columns: 1fr;
    }
}

.field {
    position: relative;
    margin-bottom: 1.3rem;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    padding: 1.35rem 0.9rem 0.55rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text);
    transition: border-color var(--t),
                background-color var(--t),
                box-shadow var(--t);
    appearance: none;
    -webkit-appearance: none;
}

.field textarea {
    resize: vertical;
    min-height: 72px;
    padding-top: 1.4rem;
}

.field select {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
    border-color: var(--border-hover);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--input-bg-focus);
    box-shadow: var(--focus-ring);
}

/* Label flottant */
.field label {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.95rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: top var(--t), transform var(--t), color var(--t);
    padding: 0 0.25rem;
}

.field textarea + label {
    top: 1.35rem;
    transform: none;
}

/* Label remonte : focus OU champ rempli */
.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field select:focus + label,
.field select:required:valid + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label {
    top: 0.5rem;
    transform: translateY(0) scale(0.82);
    transform-origin: left;
    color: var(--primary);
    font-weight: 500;
}

/* États de validation */
.field input.invalid,
.field select.invalid,
.field textarea.invalid {
    border-color: var(--danger);
    background: var(--danger-bg);
}

.field input.invalid:focus,
.field select.invalid:focus,
.field textarea.invalid:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.16);
}

.field input.valid {
    border-color: var(--success);
    background: var(--success-bg);
}

.hint {
    display: block;
    color: var(--text-muted);
    font-size: 0.78rem;
    margin-top: 0.35rem;
    margin-left: 0.2rem;
}

/* ============================================================
   12. APERÇU DU CALCUL
   ============================================================ */
.apercu {
    background: linear-gradient(135deg,
        rgba(250, 251, 255, 0.95) 0%,
        rgba(240, 249, 255, 0.95) 100%);
    border: 1.5px solid rgba(199, 210, 254, 0.6);
}

@media (prefers-color-scheme: dark) {
    .apercu {
        background: linear-gradient(135deg,
            rgba(18, 28, 51, 0.9) 0%,
            rgba(16, 26, 43, 0.9) 100%);
        border-color: rgba(42, 59, 92, 0.7);
    }
}

.grid-apercu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.apercu-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 1rem 1.1rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(224, 231, 255, 0.8);
    transition: transform var(--t), box-shadow var(--t), border-color var(--t);
    position: relative;
    overflow: hidden;
}

@media (prefers-color-scheme: dark) {
    .apercu-item {
        background: rgba(26, 37, 64, 0.9);
        border-color: rgba(42, 59, 92, 0.7);
    }
}

.apercu-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-slow);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.apercu-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(11, 61, 145, 0.12);
    border-color: var(--primary);
}

.apercu-item:hover::after {
    transform: scaleX(1);
}

.apercu-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.apercu-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-dark);
    font-variant-numeric: tabular-nums;
    word-break: break-word;
    display: inline-block;
    transform-origin: left center;
    transition: transform var(--t);
}

@media (prefers-color-scheme: dark) {
    .apercu-value {
        color: #bfdbfe;
    }
}

.apercu-value.flash {
    animation: flashValue 0.6s ease-out;
}

/* ============================================================
   13. ERREURS & MESSAGES
   ============================================================ */
.errors {
    background: var(--danger-bg);
    border: 1.5px solid var(--danger-border);
    color: var(--danger-text);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
    display: none;
    animation: shake 0.4s ease-in-out;
}

.errors.visible {
    display: block;
}

.errors ul {
    margin: 0.5rem 0 0;
    padding-left: 1.25rem;
}

.errors li {
    margin: 0.2rem 0;
}

/* Messages de succès génériques */
.msg {
    padding: 0.9rem 1.2rem;
    background: var(--success-bg);
    color: #166534;
    border: 1px solid #bbf7d0;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

@media (prefers-color-scheme: dark) {
    .msg {
        background: rgba(13, 46, 26, 0.6);
        color: #86efac;
        border-color: #14532d;
    }
}

/* ============================================================
   14. BOUTON SUBMIT
   ============================================================ */
.submit-zone {
    margin-top: 2rem;
    text-align: center;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 1.15rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    border-radius: 14px;
    font-size: 1.02rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    letter-spacing: 0.01em;
    box-shadow: 0 10px 28px rgba(11, 61, 145, 0.35);
    transition: transform var(--t), box-shadow var(--t);
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

/* Effet shimmer en arrière-plan */
.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg,
        transparent 30%,
        rgba(255, 255, 255, 0.35) 50%,
        transparent 70%);
    background-size: 200% 100%;
    animation: shimmer 3.5s infinite;
    z-index: -1;
    pointer-events: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px rgba(11, 61, 145, 0.45);
}

.btn-primary:active {
    transform: translateY(0) scale(0.99);
}

.btn-primary:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-icon {
    font-size: 1.15rem;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.15));
    transition: transform var(--t);
}

.btn-primary:hover .btn-icon {
    transform: rotate(-8deg) scale(1.1);
}

.submit-hint {
    margin-top: 0.9rem;
    font-size: 0.83rem;
    color: var(--text-muted);
}

/* Effet ripple (ajouté par JS) */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: rippleAnim 0.6s linear;
    pointer-events: none;
}

/* ============================================================
   15. TABLEAUX (admin, suivi, etc.)
   ============================================================ */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    background: #fff;
}

th, td {
    padding: 0.7rem 0.8rem;
    text-align: left;
    border-bottom: 1px solid #f1f5f9;
}

th {
    background: #f8fafc;
    font-weight: 600;
    color: #475569;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    white-space: nowrap;
}

th a {
    color: inherit;
    text-decoration: none;
}

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

tr:hover td {
    background: #fafbff;
}

@media (prefers-color-scheme: dark) {
    table {
        background: var(--card-bg-fallback);
    }
    th {
        background: #0f1827;
        color: #94a3b8;
    }
    td {
        border-bottom-color: #1e293b;
    }
    tr:hover td {
        background: #182338;
    }
}

/* ============================================================
   16. PAGINATION
   ============================================================ */
.pagination {
    display: flex;
    gap: 0.35rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    padding: 0.45rem 0.8rem;
    border-radius: 6px;
    font-size: 0.82rem;
    text-decoration: none;
    border: 1px solid var(--border);
    background: var(--card-bg-fallback);
    color: var(--text-muted);
    font-weight: 500;
    transition: all var(--t);
}

.pagination a:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.pagination .active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ============================================================
   17. UTILITAIRES
   ============================================================ */
.text-muted {
    color: var(--text-muted);
}

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

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

/* ============================================================
   18. ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Ne bouge que les 2 premières couches pour la performance */
@keyframes bgDrift {
    0%, 100% {
        background-position: 0% 0%, 100% 100%, 0% 0%;
    }
    50% {
        background-position: 30% 20%, 70% 80%, 0% 0%;
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25%      { transform: translateX(-4px); }
    75%      { transform: translateX(4px); }
}

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

@keyframes flashValue {
    0%   { transform: scale(1.08); color: var(--accent); }
    60%  { transform: scale(1.02); color: var(--accent); }
    100% { transform: scale(1); }
}

@keyframes rippleAnim {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ============================================================
   19. RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
    .page-wrapper {
        padding: 2rem 0.75rem 4rem;
    }
    .hero h1 {
        font-size: 1.6rem;
    }
    .hero .subtitle {
        font-size: 0.95rem;
    }
    .card {
        padding: 1.5rem 1.25rem;
    }
    .card-header {
        gap: 0.75rem;
    }
    .step-number {
        width: 38px;
        height: 38px;
        font-size: 0.85rem;
    }
    .card-header h2 {
        font-size: 1.05rem;
    }
    .btn-primary {
        padding: 1rem 1.5rem;
        font-size: 0.95rem;
    }
    .grid-apercu {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    table {
        font-size: 0.78rem;
    }
    th, td {
        padding: 0.5rem 0.4rem;
    }
}

/* ============================================================
   20. ACCESSIBILITÉ — Préférences utilisateur
   ============================================================ */

/* Réduction des animations */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    body {
        animation: none;
        background-image: none;
        background-color: #eef3fb;
    }
}

@media (prefers-reduced-motion: reduce) and (prefers-color-scheme: dark) {
    body {
        background-color: #0b1120;
    }
}

/* Contraste élevé */
@media (prefers-contrast: more) {
    :root {
        --text: #000;
        --text-muted: #333;
        --border: #999;
        --card-bg-fallback: #fff;
        --input-bg: #fff;
    }
    .field input,
    .field select,
    .field textarea {
        border-width: 2px;
    }
}

/* ============================================================
   FIN
   ============================================================ */