/* ==========================================================================
   style.css – Stranger Things Fan Lab
   Objectif : proposer un design simple, lisible, facilement exploitable en TP.
   ========================================================================== */

:root {
    --bg-main: #050814;
    --bg-card: #0b1022;
    --bg-card-soft: #10152b;
    --accent: #ff2b47;
    --accent-soft: rgba(255, 43, 71, 0.18);
    --text-main: #f5f5f5;
    --text-muted: #b3b3b3;
    --border-subtle: rgba(255, 255, 255, 0.1);
    --radius-lg: 18px;
    --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.7);
    --transition-fast: 0.18s ease-out;
    --transition-med: 0.25s ease-out;
}

/* Reset de base */
*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body.theme-dark {
    min-height: 100vh;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #130422, #050814 45%, #000 100%);
    color: var(--text-main);
}

.site-header {
    max-width: 1180px;
    margin: 16px auto 18px;
    padding: 14px 20px;
    border-radius: 999px;
    background: linear-gradient(120deg, #080b20, #120416);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    gap: 20px;
    justify-content: space-between;
}

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

.logo-main {
    font-family: "Georgia", "Times New Roman", serif;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--accent);
    text-shadow: 0 0 10px rgba(255, 43, 71, 0.8);
}

.logo-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.02);
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.main-nav a:hover,
.main-nav a:focus-visible {
    color: #fff;
    background: var(--accent-soft);
    border-color: var(--accent-soft);
    transform: translateY(-1px);
}

.site-main {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 16px 32px;
}

/* HERO ACCUEIL */

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 22px;
    padding: 22px 20px 24px;
    border-radius: 26px;
    background: linear-gradient(135deg, rgba(255, 43, 71, 0.16), #060820 50%, #050814 100%);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    margin-bottom: 24px;
}

.hero-text {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hero-tag {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent);
}

.hero h1 {
    margin: 0;
    font-size: clamp(1.9rem, 2.6vw, 2.3rem);
}

.hero h1 span {
    color: var(--accent);
}

.hero p {
    margin: 0;
    color: var(--text-muted);
}

.hero-list {
    margin: 4px 0 0 0;
    padding-left: 18px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.hero-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

/* Boutons réutilisables */

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 18px;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 12px 24px rgba(255, 43, 71, 0.7);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 16px 36px rgba(255, 43, 71, 0.85);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border-color: var(--border-subtle);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: var(--accent-soft);
    border-color: var(--accent-soft);
}

/* Image hero */

.hero-image img {
    width: 100%;
    border-radius: 22px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    object-fit: cover;
}

/* Code demo */

.code-demo {
    margin-top: 20px;
    padding: 18px 18px 20px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    font-size: 0.9rem;
}

.code-demo h2 {
    margin-top: 0;
    margin-bottom: 8px;
}

.code-demo pre {
    margin: 0;
    padding: 10px 12px;
    border-radius: 12px;
    background: #050814;
    border: 1px solid rgba(255, 255, 255, 0.15);
    overflow-x: auto;
}

.code-demo code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.85rem;
}

/* PAGE HEADER */

.page-header {
    padding: 16px 18px 18px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(255, 43, 71, 0.12), #060820 50%, #050814 100%);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    margin-bottom: 18px;
}

.page-header h1 {
    margin: 0 0 6px;
}

.page-header p {
    margin: 0;
    color: var(--text-muted);
}

/* CARTES / GRILLES */

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

.card {
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

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

.card-body h2 {
    margin-top: 0;
    margin-bottom: 6px;
    font-size: 1.05rem;
}

.card-body p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* CONTACT */

.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 18px;
}

.contact-form,
.contact-aside {
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    padding: 16px 16px 18px;
}

.contact-form h2,
.contact-aside h2 {
    margin-top: 0;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

label {
    font-size: 0.9rem;
}

input,
select,
textarea {
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: #050814;
    color: var(--text-main);
    padding: 8px 10px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(255, 43, 71, 0.7);
}

/* FOOTER */

.site-footer {
    max-width: 1180px;
    margin: 0 auto 18px;
    padding: 10px 18px 12px;
    border-radius: 999px;
    background: #050814;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* RESPONSIVE */

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

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

    .site-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 600px) {
    .site-main {
        padding-inline: 12px;
    }
}