/* Proposition « Horizon nuit » — nocturne, lumière et serif (contraste maximal avec « Cahier pop ») */

@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Sora:wght@300;400;500;600&display=swap");

:root {
    --hn-void: #06080c;
    --hn-deep: #0e1219;
    --hn-mist: rgba(230, 223, 209, 0.92);
    --hn-mist-dim: rgba(200, 190, 175, 0.75);
    --hn-gold: #e8c547;
    --hn-gold-soft: rgba(232, 197, 71, 0.35);
    --hn-aurora: rgba(120, 190, 255, 0.12);
    --hn-line: rgba(232, 197, 71, 0.22);
    --font-serif: "Cormorant Garamond", Georgia, serif;
    --font-sans: "Sora", system-ui, sans-serif;
    --nav-cut: 52rem;
}

.hn-brand__gold {
    color: var(--hn-gold);
    font-style: italic;
    font-weight: 400;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

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

html {
    scroll-behavior: smooth;
}

body.theme-horizon-nuit {
    margin: 0;
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: clamp(0.95rem, 0.9rem + 0.25vw, 1.05rem);
    line-height: 1.7;
    color: var(--hn-mist);
    background: var(--hn-void);
    background-image:
        radial-gradient(ellipse 120% 80% at 50% -30%, var(--hn-gold-soft), transparent 55%),
        radial-gradient(ellipse 70% 50% at 100% 20%, var(--hn-aurora), transparent 50%),
        radial-gradient(ellipse 50% 40% at 0% 80%, rgba(180, 120, 255, 0.06), transparent 45%);
    background-attachment: fixed;
    min-height: 100vh;
}

:focus-visible {
    outline: 2px solid var(--hn-gold);
    outline-offset: 3px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    z-index: 3000;
    padding: 0.65rem 1rem;
    background: var(--hn-deep);
    color: var(--hn-gold);
    border: 1px solid var(--hn-line);
    text-decoration: none;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
}

/* Header */
.hn-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(14px);
    background: color-mix(in srgb, var(--hn-deep) 82%, transparent);
    border-bottom: 1px solid var(--hn-line);
}

.hn-header__inner {
    max-width: 80rem;
    margin: 0 auto;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.hn-brand {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: clamp(1.35rem, 1.1rem + 1vw, 1.85rem);
    letter-spacing: 0.02em;
    text-decoration: none;
    color: var(--hn-mist);
}

.hn-nav {
    position: relative;
    display: flex;
    align-items: center;
}

.hn-nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.6rem;
    height: 2.6rem;
    padding: 0;
    border: 1px solid var(--hn-line);
    border-radius: 50%;
    background: transparent;
    color: var(--hn-mist);
    cursor: pointer;
}

.hn-nav-toggle span {
    display: block;
    width: 1rem;
    height: 1px;
    margin: 0 auto;
    background: currentColor;
}

.hn-nav-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hn-nav.is-open .hn-nav-panel {
    max-height: 24rem;
}

.hn-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
    justify-content: flex-end;
}

.hn-nav-list a {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--hn-mist-dim);
    padding: 0.35rem 0;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.hn-nav-list a:hover {
    color: var(--hn-gold);
    border-bottom-color: var(--hn-gold);
}

@media (min-width: 52rem) {
    .hn-nav-toggle {
        display: none;
    }

    .hn-nav-panel {
        max-height: none !important;
        overflow: visible;
    }
}

@media (max-width: 51.99rem) {
    .hn-nav-panel {
        position: absolute;
        right: 0;
        top: calc(100% + 0.75rem);
        left: 0;
        background: color-mix(in srgb, var(--hn-deep) 96%, black);
        border: 1px solid var(--hn-line);
        padding: 1rem 1.25rem;
    }

    .hn-nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}

/* Main */
.hn-main {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1rem 4rem;
}

.hn-panel {
    border: 1px solid var(--hn-line);
    background: color-mix(in srgb, var(--hn-deep) 75%, transparent);
    backdrop-filter: blur(8px);
    border-radius: 2px;
    padding: clamp(1.25rem, 3vw, 2.5rem);
}

.hn-panel .content {
    max-width: 42rem;
    margin: 0 auto;
}

/* Home */
.hn-hero {
    min-height: clamp(22rem, 55vh, 36rem);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 3rem 0 2.5rem;
    margin-bottom: 0;
    position: relative;
}

.hn-hero::after {
    content: "";
    position: absolute;
    left: 5%;
    right: 5%;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--hn-gold), transparent);
    opacity: 0.5;
}

.hn-hero__kicker {
    font-size: 0.65rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--hn-gold);
    margin-bottom: 1rem;
}

.hn-hero h1 {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: clamp(2.4rem, 1.2rem + 5vw, 4.2rem);
    line-height: 1.05;
    max-width: 18ch;
    margin: 0 0 1.5rem;
    color: var(--hn-mist);
}

.hn-hero__visual {
    margin-top: 2rem;
    max-width: 28rem;
    border: 1px solid var(--hn-line);
    padding: 0.35rem;
    background: color-mix(in srgb, var(--hn-deep) 90%, transparent);
}

.hn-hero__visual img {
    display: block;
    width: 100%;
    height: auto;
    filter: saturate(0.92) contrast(1.05);
}

.hn-dual {
    display: grid;
    gap: 1.25rem;
    margin: 2.5rem 0;
}

@media (min-width: 48rem) {
    .hn-dual {
        grid-template-columns: 1.2fr 1fr;
        align-items: start;
    }
}

.hn-prose {
    font-weight: 300;
}

.hn-prose strong {
    font-weight: 500;
    color: var(--hn-mist);
}

.hn-ethics {
    border-left: 1px solid var(--hn-line);
    padding-left: 1.25rem;
}

.hn-ethics h2 {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    font-weight: 500;
    color: var(--hn-gold);
    margin: 0 0 1rem;
}

.hn-ethics ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.hn-ethics li {
    position: relative;
    padding: 0.65rem 0 0.65rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.9rem;
    color: var(--hn-mist-dim);
}

.hn-ethics li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: var(--hn-gold);
    opacity: 0.85;
}

.hn-ethics strong {
    display: block;
    color: var(--hn-mist);
    font-weight: 500;
    margin-bottom: 0.15rem;
}

.hn-constellation {
    position: relative;
    padding: 2.5rem 0;
    margin: 2rem 0;
}

.hn-constellation::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.35), transparent),
        radial-gradient(1px 1px at 70% 20%, rgba(255, 255, 255, 0.25), transparent),
        radial-gradient(1px 1px at 40% 70%, rgba(255, 255, 255, 0.2), transparent),
        radial-gradient(1px 1px at 88% 65%, rgba(232, 197, 71, 0.4), transparent),
        radial-gradient(1px 1px at 12% 80%, rgba(255, 255, 255, 0.18), transparent);
    pointer-events: none;
    opacity: 0.7;
}

.hn-constellation-inner {
    position: relative;
    z-index: 1;
    max-width: 40rem;
    margin: 0 auto;
}

.hn-constellation-inner h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 1.2rem + 1.5vw, 2.35rem);
    font-weight: 500;
    margin-top: 0;
    color: var(--hn-mist);
}

.hn-constellation-inner a {
    color: var(--hn-gold);
}

.hn-cta {
    text-align: center;
    padding: 3rem 1.5rem;
    margin-top: 2rem;
    border: 1px solid var(--hn-line);
    background: linear-gradient(160deg, color-mix(in srgb, var(--hn-deep) 90%, transparent), rgba(232, 197, 71, 0.06));
}

.hn-cta h2 {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: clamp(1.6rem, 1.2rem + 1vw, 2rem);
    margin-top: 0;
    color: var(--hn-mist);
}

.hn-cta p {
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--hn-mist-dim);
    margin-bottom: 1.5rem;
}

.hn-btn {
    display: inline-block;
    margin: 0.35rem 0.5rem;
    padding: 0.65rem 1.4rem;
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--hn-gold);
    border: 1px solid var(--hn-gold);
    background: transparent;
    transition: background 0.2s ease, color 0.2s ease;
}

.hn-btn:hover {
    background: var(--hn-gold);
    color: var(--hn-void);
}

/* Inner pages */
body.theme-horizon-nuit h1,
body.theme-horizon-nuit h2,
body.theme-horizon-nuit h3 {
    font-family: var(--font-serif);
    font-weight: 500;
    color: var(--hn-mist);
}

body.theme-horizon-nuit .logo-accueil img {
    border: 1px solid var(--hn-line);
    padding: 0.25rem;
    background: color-mix(in srgb, var(--hn-deep) 80%, transparent);
}

body.theme-horizon-nuit .content-section {
    border: 1px solid var(--hn-line);
    background: color-mix(in srgb, var(--hn-deep) 70%, transparent);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

body.theme-horizon-nuit a {
    color: var(--hn-gold);
}

body.theme-horizon-nuit .cta-button {
    font-family: var(--font-sans);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    border: 1px solid var(--hn-gold);
    background: transparent;
    color: var(--hn-gold);
    padding: 0.6rem 1.2rem;
    border-radius: 0;
}

body.theme-horizon-nuit .cta-button:hover {
    background: var(--hn-gold);
    color: var(--hn-void);
}

body.theme-horizon-nuit form label {
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--hn-mist-dim);
}

body.theme-horizon-nuit form input,
body.theme-horizon-nuit form textarea {
    background: color-mix(in srgb, var(--hn-void) 60%, transparent);
    border: 1px solid var(--hn-line);
    color: var(--hn-mist);
}

body.theme-horizon-nuit button,
body.theme-horizon-nuit input[type="submit"] {
    font-family: var(--font-sans);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    border: 1px solid var(--hn-gold);
    background: transparent;
    color: var(--hn-gold);
    padding: 0.55rem 1.1rem;
    cursor: pointer;
}

/* Footer */
.hn-footer {
    margin-top: 3rem;
    padding: 2rem 1rem;
    border-top: 1px solid var(--hn-line);
    text-align: center;
    font-size: 0.72rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--hn-mist-dim);
}

.hn-footer nav {
    margin-top: 0.75rem;
}

.hn-footer a {
    color: var(--hn-mist-dim);
    text-decoration: none;
    margin: 0 0.75rem;
}

.hn-footer a:hover {
    color: var(--hn-gold);
}