/* =====================================================================
   Plateforme de validation - Styles frontend
   Thème clair bleu / vert (même identité que la page d'accueil)
   ===================================================================== */

:root {
    /* Surfaces */
    --bg: #ffffff;
    --bg-soft: #f5f8fc;
    --surface: #ffffff;
    --surface-2: #f5f8fc;
    --surface-3: #eef2f8;
    --border: #e6ebf2;
    --border-strong: #d6deea;

    /* Texte */
    --text: #0f172a;
    --text-secondary: #4b5768;
    --text-muted: #8792a2;

    /* Accent */
    --blue: #2563eb;
    --blue-dark: #1d4ed8;
    --blue-light: #eaf1ff;
    --accent: #2563eb;
    --accent-soft: #eaf1ff;

    --green: #10b981;
    --green-dark: #059669;
    --green-light: #e6f9f1;

    --success: #10b981;
    --success-soft: #e6f9f1;
    --warning: #d97706;
    --warning-soft: #fef3e2;
    --error: #dc2626;
    --error-soft: #fdecec;

    --gradient: linear-gradient(135deg, var(--blue), var(--green));

    --radius: 20px;
    --radius-sm: 12px;
    --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.05);
    --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
    --shadow-glow: 0 10px 24px rgba(37, 99, 235, 0.25);
    --transition: 0.2s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

::selection { background: rgba(37, 99, 235, 0.16); color: var(--text); }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Halo doux en fond, identité "fintech" cohérente avec la landing */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(620px 400px at 12% -10%, rgba(37, 99, 235, 0.07), transparent 60%),
        radial-gradient(520px 360px at 100% 0%, rgba(16, 185, 129, 0.06), transparent 60%),
        var(--bg);
}

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; width: 100%; }

/* Header */
.site-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}

.logo-mark {
    width: 32px;
    height: 32px;
    background: var(--gradient);
    border-radius: 10px;
    position: relative;
    flex-shrink: 0;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}
.logo-mark::after {
    content: '';
    position: absolute;
    inset: 6px;
    border: 2px solid #fff;
    border-radius: 4px;
    border-top: none;
    border-right: none;
}

.logo-text {
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.02em;
}

/* Main */
.site-main { flex: 1; }

/* Hero / Home */
.hero-section {
    padding: 48px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 64px - 48px);
}

.validation-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 48px;
    max-width: 520px;
    width: 100%;
    text-align: center;
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--accent-soft);
    color: var(--blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.card-subtitle {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 32px;
}

.validation-form { text-align: left; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Form elements */
.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 7px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.req { color: var(--error); }

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: var(--font);
    color: var(--text);
    background: var(--surface-2);
    transition: var(--transition);
    appearance: none;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blue);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

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

.form-group textarea { resize: vertical; min-height: 90px; }

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234b5768' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    border: none;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(37, 99, 235, 0.32); }

.btn-secondary {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--surface-3); }

.btn-block { width: 100%; }

.btn-sm { padding: 9px 16px; font-size: 13px; }

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border-strong);
    color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); background: var(--accent-soft); }

/* Secure badge */
.secure-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 24px;
    color: var(--text-muted);
    font-size: 13px;
}

/* Stepper */
.stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    max-width: 600px;
    margin: 0 auto;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--surface-3);
    border: 1px solid var(--border);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    transition: var(--transition);
}

.step-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }

.step.step-done .step-num { background: var(--green); border-color: var(--green); color: #fff; }
.step.step-done .step-label { color: var(--text-secondary); }

.step.step-current .step-num {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.16);
}
.step.step-current .step-label { color: var(--text); font-weight: 700; }

.step-line {
    flex: 1;
    height: 2px;
    background: var(--border);
    margin: 0 8px;
    margin-bottom: 22px;
    max-width: 60px;
}
.step-line.step-line-active { background: var(--green); }

/* Forms list */
.page-info { text-align: center; margin-bottom: 32px; }
.page-info h2 { font-size: 24px; font-weight: 800; color: var(--text); margin-bottom: 4px; letter-spacing: -0.02em; }
.page-info p { color: var(--text-secondary); font-size: 15px; }

.forms-list { display: flex; flex-direction: column; gap: 16px; max-width: 600px; margin: 0 auto; }

.form-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    box-shadow: var(--shadow-sm);
}
.form-card:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-2px); }

.form-card-title { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.form-card-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }

.empty-state-card {
    text-align: center;
    padding: 48px;
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto;
}
.empty-state-card p { margin-bottom: 16px; }

/* Form detail */
.form-detail-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    max-width: 640px;
    margin: 0 auto 48px;
    box-shadow: var(--shadow);
}

.form-detail-title { font-size: 24px; font-weight: 800; color: var(--text); margin-bottom: 8px; letter-spacing: -0.02em; }
.form-detail-desc { color: var(--text-secondary); margin-bottom: 32px; font-size: 15px; }

.dynamic-form .form-group { margin-bottom: 24px; }

.radio-group, .checkbox-group { display: flex; flex-direction: column; gap: 10px; }
.radio-item, .checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    background: var(--surface-2);
}
.radio-item:hover, .checkbox-item:hover { border-color: var(--border-strong); background: #fff; }
.radio-item:has(input:checked), .checkbox-item:has(input:checked) {
    border-color: var(--blue);
    background: var(--accent-soft);
    color: var(--blue-dark);
}
.radio-item input, .checkbox-item input { width: auto; accent-color: var(--blue); }

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 32px;
}

.field-error { display: block; color: var(--error); font-size: 13px; margin-top: 6px; font-weight: 500; }

/* Success */
.success-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 48px;
    max-width: 480px;
    width: 100%;
    margin: 0 auto 48px;
    text-align: center;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--success-soft);
    color: var(--green-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reference-box {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.reference-label { font-size: 13px; color: var(--text-secondary); }
.reference-value { font-size: 20px; font-weight: 800; color: var(--text); font-family: var(--font-mono); letter-spacing: 0.02em; }

/* Alerts */
.alert {
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    font-weight: 500;
}
.alert-error { background: var(--error-soft); color: #b91c1c; border-color: #f8caca; }
.alert-success { background: var(--success-soft); color: var(--green-dark); border-color: #b7ecd7; }
.alert ul { margin: 0; padding-left: 20px; }

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.01em;
}
.badge-neutral { background: var(--surface-3); color: var(--text-secondary); }
.badge-success { background: var(--success-soft); color: var(--green-dark); }
.badge-warning { background: var(--warning-soft); color: #b45309; }
.badge-info { background: var(--accent-soft); color: var(--blue-dark); }
.badge-muted { background: var(--surface-3); color: var(--text-muted); }

/* Footer */
.site-footer {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    border-top: 1px solid var(--border);
}

.mono { font-family: var(--font-mono); font-size: 13px; }
.text-muted { color: var(--text-muted); }

/* Login (admin) */
.login-body {
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    position: relative;
}
.login-body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(620px 400px at 20% 10%, rgba(37, 99, 235, 0.10), transparent 60%),
        radial-gradient(520px 360px at 100% 100%, rgba(16, 185, 129, 0.08), transparent 60%),
        var(--bg);
}

.login-container { width: 100%; max-width: 400px; }

.login-logo {
    justify-content: center;
    margin-bottom: 32px;
    color: var(--text);
}

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-title { font-size: 22px; color: var(--text); margin-bottom: 24px; text-align: center; font-weight: 800; letter-spacing: -0.02em; }

.login-form .form-group { margin-bottom: 20px; }

/* Loader */
.btn-loader {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 100px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #c3cedd; }

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .validation-card, .form-detail-card, .success-card { padding: 28px 20px; }
    .form-row { grid-template-columns: 1fr; }
    .form-card { flex-direction: column; align-items: stretch; }
    .form-card .btn { width: 100%; }
    .form-actions { flex-direction: column-reverse; }
    .form-actions .btn { width: 100%; }
    .stepper { padding: 20px 8px; }
    .step-label { display: none; }
    .step-line { max-width: 30px; }
    .header-inner { padding: 0 16px; }
    .logo-text { font-size: 14px; }
}

@media (max-width: 480px) {
    .card-title { font-size: 20px; }
    .validation-card { padding: 24px 16px; }
}