/*
 * style.css — InvestissementPourDebutant.com
 * Palette : Bleu (#1a56db) / Blanc / Vert CTA (#16a34a) / Gris clair (#f3f4f6)
 * Police : Poppins
 */

:root {
    --color-primary: #1a56db;
    --color-primary-dark: #12409e;
    --color-success: #16a34a;
    --color-success-dark: #0f7c37;
    --color-light: #f3f4f6;
    --color-dark: #111827;
    --radius-lg: 1rem;
    --transition-base: all 0.25s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--color-dark);
    background-color: #ffffff;
}

.skip-link {
    position: absolute;
    top: -3rem;
    left: 1rem;
    z-index: 2000;
    background: var(--color-primary);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
}
.skip-link:focus {
    top: 1rem;
}

/* ---------- Header ---------- */
.site-header .navbar-brand {
    color: var(--color-primary);
    font-size: 1.25rem;
}
.site-header .nav-link {
    font-weight: 500;
    color: var(--color-dark);
    transition: var(--transition-base);
}
.site-header .nav-link:hover {
    color: var(--color-primary);
}
.breadcrumb-nav {
    background-color: var(--color-light);
}

/* ---------- Boutons ---------- */
.btn-success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    transition: var(--transition-base);
}
.btn-success:hover, .btn-success:focus {
    background-color: var(--color-success-dark);
    border-color: var(--color-success-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(22, 163, 74, 0.25);
}
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* ---------- Hero ---------- */
.hero-section {
    background: linear-gradient(135deg, #eaf1ff 0%, #ffffff 60%);
    padding: 5rem 0 4rem;
    overflow: hidden;
}
.hero-section h1 {
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--color-dark);
}
.hero-section .lead {
    color: #4b5563;
}
.hero-illustration {
    animation: floatY 4s ease-in-out infinite;
}
@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

/* ---------- Fade in au chargement / scroll ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Emplacements publicitaires ---------- */
.ad-slot {
    background-color: var(--color-light);
    border: 1px dashed #cbd5e1;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    color: #9ca3af;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 2.5rem 0;
}

/* ---------- Bloc sondage ---------- */
.survey-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(17, 24, 39, 0.08);
    padding: 2.5rem;
}
.progress-wrapper .progress {
    height: 10px;
    border-radius: 999px;
    background-color: var(--color-light);
}
.progress-wrapper .progress-bar {
    background-color: var(--color-success);
    transition: width 0.5s ease;
}
.survey-option {
    display: block;
    cursor: pointer;
}
.survey-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.survey-option .option-box {
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-base);
    font-weight: 500;
}
.survey-option .option-box i.radio-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid #d1d5db;
    flex-shrink: 0;
    position: relative;
    transition: var(--transition-base);
}
.survey-option:hover .option-box {
    border-color: var(--color-primary);
    background-color: #f8fafc;
}
.survey-option input[type="radio"]:checked + .option-box {
    border-color: var(--color-success);
    background-color: #f0fdf4;
}
.survey-option input[type="radio"]:checked + .option-box i.radio-dot {
    border-color: var(--color-success);
    background-color: var(--color-success);
    box-shadow: inset 0 0 0 3px #fff;
}
.survey-option input[type="radio"]:focus-visible + .option-box {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* ---------- Marques ---------- */
.brands-grid .brand-item {
    background: #fff;
    border: 1px solid #eef0f3;
    border-radius: 0.75rem;
    padding: 1.25rem 1rem;
    text-align: center;
    transition: var(--transition-base);
    height: 100%;
}
.brands-grid .brand-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(17, 24, 39, 0.08);
    border-color: var(--color-primary);
}
.brands-grid .brand-item i {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}
.brands-grid .brand-item span {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
}
.brands-grid .brand-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #6b7280;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

/* ---------- Avis clients (style Trustpilot) ---------- */
.review-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 6px 20px rgba(17, 24, 39, 0.06);
    padding: 1.5rem;
    transition: var(--transition-base);
}
.review-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(17, 24, 39, 0.1);
}
.review-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    flex-shrink: 0;
}

/* ---------- Articles ---------- */
.article-card {
    border: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(17, 24, 39, 0.06);
    transition: var(--transition-base);
    height: 100%;
}
.article-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(17, 24, 39, 0.12);
}
.article-card img {
    height: 200px;
    object-fit: cover;
    width: 100%;
}
.article-card .card-body {
    padding: 1.5rem;
}

/* ---------- Stats ---------- */
.stats-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #143f9e 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 3rem 1.5rem;
}
.stats-section .stat-item i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: #93c5fd;
}
.stats-section .stat-number {
    font-size: 2.25rem;
    font-weight: 800;
}

/* ---------- Footer ---------- */
.footer-link {
    color: #cbd5e1;
    text-decoration: none;
    transition: var(--transition-base);
}
.footer-link:hover {
    color: #fff;
    padding-left: 4px;
}
.newsletter-form .form-control:focus {
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.25);
}

/* ---------- FAQ ---------- */
.accordion-button:not(.collapsed) {
    background-color: #eff6ff;
    color: var(--color-primary-dark);
}
.accordion-button:focus {
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.25);
}

/* ---------- Responsive tweaks ---------- */
@media (max-width: 767.98px) {
    .hero-section { padding: 3rem 0 2.5rem; text-align: center; }
    .survey-card { padding: 1.5rem; }
    .stats-section { padding: 2rem 1rem; }
}