/* ===========================
   1. Variables & reset
   =========================== */

:root {
    --bg-0: #020617;   /* fond général */
    --bg-1: #050b18;   /* cartes / sections */
    --bg-2: #020617;   /* nav, footer */

    --accent: #38bdf8;      /* bleu principal */
    --accent-soft: #60a5fa; /* bleu secondaire */

    --txt-0: #f9fafb; /* texte clair */
    --txt-1: #e5e7eb;
    --muted: #9ca3af;

    --border: #1f2933;
    --card-border: #111827;

    --radius-lg: 18px;
    --radius-md: 12px;

    --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.9);
    --shadow-card: 0 12px 35px rgba(15, 23, 42, 0.85);

    --nav-height: 64px;
}

/* Reset simple */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    color: var(--txt-1);
    background: radial-gradient(circle at top, #020617 0, #020617 48%, #020617 100%);
}

/* Liens */

a {
    color: var(--accent-soft);
    text-decoration: none;
}

a:hover {
    color: var(--accent);
}

/* ===========================
   2. Layout global
   =========================== */

.page-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Wrapper pour le contenu (hors footer) */

.page-content {
    flex: 1 0 auto;
}

/* Conteneur */

.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ===========================
   3. Navigation
   =========================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: linear-gradient(to bottom, rgba(2, 6, 23, 0.96), rgba(2, 6, 23, 0.92));
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(30, 64, 175, 0.4);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

/* Logo */

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-mark {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 20%, #38bdf8, #1d4ed8 55%, #020617 100%);
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.3), 0 0 22px rgba(56, 189, 248, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-mark span {
    font-size: 14px;
    font-weight: 700;
    color: #e5f4ff;
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-text strong {
    font-size: 18px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--txt-0);
}

.brand-text span {
    font-size: 11px;
    color: var(--muted);
}

/* Nav links */

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 14px;
}

.nav-links a {
    color: var(--muted);
    padding: 6px 0;
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), var(--accent-soft));
    transition: width 0.2s ease-out;
}

.nav-links a:hover {
    color: var(--txt-0);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Burger mobile */

.nav-toggle {
    display: none;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid rgba(55, 65, 81, 0.8);
    background: rgba(15, 23, 42, 0.9);
    color: var(--txt-1);
    align-items: center;
    justify-content: center;
}

/* ===========================
   4. Hero / sections
   =========================== */

main {
    padding-bottom: 32px;
}

.hero {
    padding: 32px 0 10px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
    gap: 28px;
    align-items: center;
}

.hero-kicker {
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent-soft);
    margin-bottom: 12px;
}

.hero-title {
    font-size: 32px;
    line-height: 1.2;
    margin: 0 0 10px;
    color: var(--txt-0);
}

.hero-subtitle {
    margin: 0 0 16px;
    color: var(--muted);
    font-size: 14px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 12px;
    color: var(--muted);
}

.hero-meta .tag {
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: radial-gradient(circle at top, rgba(37, 99, 235, 0.35), rgba(15, 23, 42, 0.96));
    color: var(--txt-1);
}

.hero-card {
    position: relative;
    padding: 18px 18px 16px;
    border-radius: var(--radius-lg);
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), #020617);
    border: 1px solid rgba(31, 41, 55, 0.95);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

/* Petite “grille radar” dans la carte */

.hero-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at top, rgba(56, 189, 248, 0.04), transparent 55%),
        linear-gradient(rgba(15, 23, 42, 0.7) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 23, 42, 0.6) 1px, transparent 1px);
    background-size: auto, 40px 40px, 40px 40px;
    opacity: 0.7;
    pointer-events: none;
}

.hero-card-inner {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hero-card-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1;
}

.hero-card-title {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--muted);
}

.hero-card-badge {
    padding: 4px 9px;
    border-radius: 999px;
    background: rgba(22, 163, 74, 0.12);
    border: 1px solid rgba(22, 163, 74, 0.4);
    color: #bbf7d0;
    font-size: 11px;
}

/* ===========================
   5. Grilles de cartes
   =========================== */

section {
    padding: 16px 0 10px;
}

.section-title {
    font-size: 20px;
    margin: 0 0 6px;
    color: var(--txt-0);
}

.section-subtitle {
    margin: 0 0 18px;
    font-size: 14px;
    color: var(--muted);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.card {
    border-radius: var(--radius-lg);
    background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.28), rgba(15, 23, 42, 0.98));
    border: 1px solid rgba(31, 41, 55, 0.95);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-thumb {
    position: relative;
    overflow: hidden;
}

.card-thumb img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    display: block;
    transform: scale(1.02);
    transition: transform 0.35s ease-out, opacity 0.35s ease-out;
    opacity: 0.92;
}

.card:hover .card-thumb img {
    transform: scale(1.05);
    opacity: 1;
}

.card-body {
    padding: 14px 16px 16px;
}

.card-kicker {
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-soft);
    margin-bottom: 6px;
}

.card-title {
    font-size: 16px;
    margin: 0 0 6px;
    color: var(--txt-0);
}

.card-excerpt {
    margin: 0 0 12px;
    font-size: 13px;
    color: var(--muted);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--muted);
}

.chip {
    padding: 4px 9px;
    border-radius: 999px;
    border: 1px solid rgba(55, 65, 81, 0.88);
    background: rgba(15, 23, 42, 0.96);
}

/* ===========================
   6. Contact & formulaires
   =========================== */

.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.4fr);
    gap: 28px;
    align-items: flex-start;
    padding-top: 22px;
}

.contact-panel {
    border-radius: var(--radius-lg);
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.16), rgba(15, 23, 42, 0.98));
    border: 1px solid rgba(31, 41, 55, 0.95);
    box-shadow: var(--shadow-card);
    padding: 20px 18px 18px;
}

.contact-panel h1 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 24px;
    color: var(--txt-0);
}

.contact-panel p {
    margin: 0 0 14px;
    font-size: 14px;
    color: var(--muted);
}

.contact-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}

.contact-badge {
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15, 23, 42, 0.96);
    font-size: 11px;
    color: var(--muted);
}

/* Formulaire */

.form-card {
    border-radius: var(--radius-lg);
    background: radial-gradient(circle at top, rgba(37, 99, 235, 0.25), rgba(15, 23, 42, 0.98));
    border: 1px solid rgba(31, 41, 55, 0.95);
    box-shadow: var(--shadow-card);
    padding: 18px 18px 16px;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.form-group {
    margin-bottom: 12px;
    flex: 1 1 100%;
}

.form-group.half {
    flex: 1 1 calc(50% - 6px);
}

label {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    color: var(--txt-0);
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 9px 10px;
    border-radius: 10px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15, 23, 42, 0.96);
    color: var(--txt-1);
    font-size: 13px;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: rgba(56, 189, 248, 0.7);
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.45);
}

/* Boutons */

.button-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.btn-primary {
    padding: 10px 18px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    background: linear-gradient(90deg, #1d4ed8, #38bdf8);
    color: white;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.6);
}

.btn-primary:hover {
    filter: brightness(1.08);
}

.btn-ghost {
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: transparent;
    color: var(--muted);
    font-size: 12px;
}

/* ===========================
   7. Footer animé
   =========================== */

footer {
    position: relative;
    border-top: 1px solid var(--border);
    padding: 30px 24px 26px;
    background: var(--bg-1);
    text-align: center;
    color: var(--txt-1);
    font-size: 0.9rem;
    margin-top: 60px;
    overflow: hidden;
}

/* Fine ligne animée en haut du footer */
footer::before {
    content: "";
    position: absolute;
    left: -25%;
    top: -1px;
    width: 50%;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--accent),
        var(--accent-soft),
        transparent
    );
    opacity: 0.0;
    filter: blur(1px);
    animation: footer-scan 4s linear infinite;
}

/* Légère mise en avant du nom de l'auteur / brand */
.footer-brand {
    color: var(--accent-soft);
    font-weight: 600;
    transition: color 0.25s ease, text-shadow 0.25s ease;
}

.footer-brand:hover {
    color: var(--accent);
    text-shadow: 0 0 10px rgba(56, 189, 248, 0.7);
}

/* Animation de balayage */
@keyframes footer-scan {
    0% {
        transform: translateX(-60%);
        opacity: 0;
    }
    15% {
        opacity: 0.9;
    }
    100% {
        transform: translateX(260%);
        opacity: 0;
    }
}

/* ===========================
   8. Responsif
   =========================== */

@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .contact-layout {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 720px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .card-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero-title {
        font-size: 26px;
    }
}