/* =========================================================
   LM — Cinématographe Lunaire
   Minimal space design system
   ========================================================= */

:root {
    /* --- ink & bone --- */
    --void:      #08090b;
    --void-2:    #0d0f13;
    --void-3:    #12151a;
    --bone:      #e8e3d9;
    --dust:      #8d8880;
    --line:      rgba(232, 227, 217, 0.13);
    --line-soft: rgba(232, 227, 217, 0.07);

    /* --- one accent: hand-tinted amber (Méliès) --- */
    --amber:     #c8894a;
    --amber-dim: rgba(200, 137, 74, 0.22);

    /* --- type --- */
    --serif: 'Instrument Serif', 'Times New Roman', serif;
    --sans:  'Inter', system-ui, -apple-system, sans-serif;
    --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

    /* --- rhythm --- */
    --gutter: clamp(24px, 6vw, 110px);
    --stack:  clamp(90px, 14vh, 180px);
    --max:    1180px;

    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --- reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    background: var(--void);
    color: var(--bone);
    font-family: var(--sans);
    font-weight: 300;
    font-size: 16px;
    line-height: 1.7;
    letter-spacing: 0.01em;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

::selection { background: var(--amber); color: var(--void); }

img, video, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

/* =========================================================
   ATMOSPHERE — starfield, grain, vignette
   ========================================================= */

#sky {
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(120% 80% at 50% 0%, #101319 0%, var(--void) 55%);
}

#sky canvas { width: 100%; height: 100%; opacity: 0.85; }

/* film grain — silent-cinema emulsion */
#grain {
    position: fixed;
    inset: -60px;
    z-index: 900;
    pointer-events: none;
    opacity: 0.24;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
    animation: grain 0.7s steps(4) infinite;
}

@keyframes grain {
    0%   { transform: translate(0, 0); }
    25%  { transform: translate(-14px, 8px); }
    50%  { transform: translate(9px, -12px); }
    75%  { transform: translate(-6px, -6px); }
    100% { transform: translate(0, 0); }
}

/* vignette — projector falloff */
#vignette {
    position: fixed;
    inset: 0;
    z-index: 890;
    pointer-events: none;
    background: radial-gradient(120% 95% at 50% 45%, transparent 42%, rgba(0,0,0,0.55) 100%);
}

/* =========================================================
   NAV
   ========================================================= */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px var(--gutter);
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: background 0.5s var(--ease), border-color 0.5s var(--ease), padding 0.5s var(--ease);
    border-bottom: 1px solid transparent;
}

.nav.is-stuck {
    background: rgba(8, 9, 11, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: var(--line-soft);
    padding-top: 16px;
    padding-bottom: 16px;
}

.nav__mark {
    display: flex;
    align-items: baseline;
    gap: 0.55em;
    color: var(--bone);
}
.nav__mark b { font-weight: 500; letter-spacing: 0.2em; }
.nav__mark i { font-style: normal; color: var(--dust); }

.nav__links { display: flex; gap: 34px; list-style: none; }
.nav__links a {
    color: var(--dust);
    position: relative;
    transition: color 0.35s var(--ease);
}
.nav__links a::after {
    content: '';
    position: absolute;
    left: 0; bottom: -6px;
    width: 100%; height: 1px;
    background: var(--amber);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.45s var(--ease);
}
.nav__links a:hover { color: var(--bone); }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }

@media (max-width: 780px) { .nav__links { display: none; } }

/* =========================================================
   ORBIT — lateral scroll-driven descent
   ========================================================= */

.orbit {
    position: fixed;
    top: 0;
    right: clamp(10px, 2.5vw, 46px);
    height: 100vh;
    width: clamp(150px, 15vw, 210px);
    z-index: 1;
    pointer-events: none;
    opacity: 0.9;
}
.orbit svg { width: 100%; height: 100%; overflow: visible; }

/* the page column keeps clear of the orbit strip */
.page { position: relative; z-index: 2; }

@media (min-width: 1040px) {
    .page { padding-right: clamp(160px, 16vw, 240px); }
}
@media (max-width: 820px) {
    .orbit { display: none; }
}

#plan {
    fill: none;
    stroke: var(--bone);
    stroke-width: 1;
    stroke-dasharray: 1 7;
    stroke-linecap: round;
    opacity: 0.16;
    vector-effect: non-scaling-stroke;
}

.tele {
    fill: var(--dust);
    font-family: var(--mono);
    font-size: 15px;
    letter-spacing: 3px;
    opacity: 0.5;
}

/* engraving strokes */
.orbit .ln {
    fill: none;
    stroke: var(--bone);
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
}
.voyage .ln--thin  { stroke-width: 1; opacity: 0.5; }
.voyage .ln--faint { stroke-width: 1; opacity: 0.24; }
.orbit .fill-void { fill: var(--void); }
.orbit .fill-bone { fill: var(--bone); stroke: none; }

#moonDisc { fill: rgba(232, 227, 217, 0.035); }

#trail {
    fill: none;
    stroke: var(--amber);
    stroke-width: 1.4;
    stroke-dasharray: 2 9;
    stroke-linecap: round;
    opacity: 0.75;
    vector-effect: non-scaling-stroke;
}

/* =========================================================
   LEAD — opening screen
   ========================================================= */

.lead {
    position: relative;
    min-height: 100svh;
    max-width: var(--max);
    margin: 0 auto;
    padding: clamp(150px, 24vh, 240px) var(--gutter) clamp(90px, 14vh, 140px);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.lead__eyebrow {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--dust);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 14px;
}
.lead__eyebrow::before {
    content: '';
    width: 34px; height: 1px;
    background: var(--amber);
    flex: none;
}

.lead__title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(3.2rem, 11vw, 8.4rem);
    line-height: 0.9;
    letter-spacing: -0.025em;
}
.lead__title em { font-style: italic; color: var(--amber); }

.lead__sub {
    margin-top: 30px;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.26em;
    text-transform: uppercase;
    color: var(--dust);
}

.lead__actions {
    margin-top: 46px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

/* --- scroll cue --- */
.cue {
    position: absolute;
    left: var(--gutter);
    bottom: 40px;
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--dust);
    display: flex;
    align-items: center;
    gap: 14px;
    transition: opacity 0.6s var(--ease);
}
.cue::after {
    content: '';
    width: 56px;
    height: 1px;
    background: linear-gradient(90deg, var(--dust), transparent);
    animation: cueDrop 2.6s var(--ease) infinite;
}
@keyframes cueDrop {
    0%   { transform: scaleX(0); transform-origin: left; opacity: 0; }
    35%  { transform: scaleX(1); transform-origin: left; opacity: 1; }
    70%  { transform: scaleX(1); transform-origin: right; opacity: 1; }
    100% { transform: scaleX(0); transform-origin: right; opacity: 0; }
}

/* =========================================================
   LAYOUT PRIMITIVES
   ========================================================= */

.section {
    position: relative;
    padding: var(--stack) var(--gutter);
    max-width: var(--max);
    margin: 0 auto;
}

.section__head {
    display: flex;
    align-items: baseline;
    gap: 20px;
    padding-bottom: 22px;
    margin-bottom: clamp(40px, 7vh, 80px);
    border-bottom: 1px solid var(--line);
}

.section__index {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    color: var(--amber);
}

.section__title {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--dust);
    font-weight: 400;
}

/* reveal-on-scroll */
[data-reveal] {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 1s var(--ease), transform 1s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* =========================================================
   ABOUT
   ========================================================= */

.about {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: clamp(40px, 7vw, 100px);
    align-items: start;
}

.about__lead {
    font-family: var(--serif);
    font-size: clamp(1.5rem, 3.4vw, 2.5rem);
    line-height: 1.28;
    letter-spacing: -0.01em;
    margin-bottom: 34px;
}
.about__lead em { font-style: italic; color: var(--amber); }

.about p + p { margin-top: 18px; }
.about__body { color: var(--dust); max-width: 56ch; }
.about__body strong { color: var(--bone); font-weight: 400; }

.specs { border-top: 1px solid var(--line); }
.specs__row {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line-soft);
    align-items: baseline;
}
.specs__key {
    font-family: var(--mono);
    font-size: 0.62rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--amber);
}
.specs__val { font-size: 0.9rem; color: var(--dust); line-height: 1.6; }

@media (max-width: 860px) { .about { grid-template-columns: 1fr; } }

/* =========================================================
   LOG — experience & projects as a mission log
   ========================================================= */

.log { border-top: 1px solid var(--line); }

.entry {
    display: block;
    border-bottom: 1px solid var(--line);
    padding: clamp(34px, 5vw, 54px) 0;
    position: relative;
    transition: background 0.6s var(--ease);
}
.entry:hover { background: rgba(232, 227, 217, 0.015); }

.entry__grid {
    display: grid;
    grid-template-columns: 64px 1.25fr 0.9fr;
    gap: clamp(22px, 4vw, 56px);
    align-items: start;
}

.entry__num {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    color: var(--dust);
    padding-top: 8px;
}

.entry__meta {
    font-family: var(--mono);
    font-size: 0.62rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 14px;
    display: block;
}

.entry__title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(1.6rem, 3.4vw, 2.6rem);
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
    transition: color 0.4s var(--ease);
}
.entry:hover .entry__title { color: var(--amber); }

.entry__text { color: var(--dust); font-size: 0.95rem; max-width: 58ch; }
.entry__text strong { color: var(--bone); font-weight: 400; }
.entry__text + .entry__text { margin-top: 12px; }

.entry__list {
    list-style: none;
    margin-top: 16px;
    color: var(--dust);
    font-size: 0.9rem;
}
.entry__list li {
    position: relative;
    padding-left: 20px;
    margin-top: 8px;
}
.entry__list li::before {
    content: '';
    position: absolute;
    left: 0; top: 0.72em;
    width: 8px; height: 1px;
    background: var(--amber);
}

.entry__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}
.tag {
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--dust);
    border: 1px solid var(--line);
    border-radius: 100px;
    padding: 5px 12px;
    transition: border-color 0.4s var(--ease), color 0.4s var(--ease);
}
.entry:hover .tag { border-color: var(--amber-dim); color: var(--bone); }

/* media panel */
.entry__media {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border: 1px solid var(--line);
    background: var(--void-2);
}
.entry__media img,
.entry__media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.08) brightness(0.7);
    opacity: 0.7;
    transform: scale(1.02);
    transition: filter 0.9s var(--ease), opacity 0.9s var(--ease), transform 1.2s var(--ease);
}
.entry:hover .entry__media img,
.entry:hover .entry__media video {
    filter: grayscale(15%) contrast(1) brightness(0.95);
    opacity: 1;
    transform: scale(1.06);
}
.entry__media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(8,9,11,0.6));
    pointer-events: none;
}

.entry__go {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 26px;
    font-family: var(--mono);
    font-size: 0.63rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--bone);
}
.entry__go span {
    display: block;
    width: 26px; height: 1px;
    background: var(--amber);
    transition: width 0.5s var(--ease);
}
.entry:hover .entry__go span { width: 46px; }

@media (max-width: 900px) {
    .entry__grid { grid-template-columns: 1fr; gap: 24px; }
    .entry__num { padding-top: 0; }
    .entry__media { aspect-ratio: 16 / 9; }
}

/* =========================================================
   BUTTONS
   ========================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    padding: 15px 28px;
    border: 1px solid var(--line);
    border-radius: 100px;
    color: var(--bone);
    background: transparent;
    transition: border-color 0.4s var(--ease), color 0.4s var(--ease), background 0.4s var(--ease);
    cursor: pointer;
}
.btn:hover { border-color: var(--amber); color: var(--amber); }

.btn--solid {
    background: var(--bone);
    color: var(--void);
    border-color: var(--bone);
}
.btn--solid:hover { background: var(--amber); border-color: var(--amber); color: var(--void); }

.btn--ghost { border-color: transparent; padding-left: 0; padding-right: 0; }
.btn--ghost:hover { color: var(--amber); }

/* back button on sub-pages */
.back-btn {
    position: fixed;
    top: 20px;
    left: var(--gutter);
    z-index: 600;
    background: rgba(8, 9, 11, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 11px 20px;
}

/* =========================================================
   FOOTER
   ========================================================= */

.footer {
    border-top: 1px solid var(--line);
    padding: clamp(70px, 12vh, 130px) var(--gutter) 50px;
    max-width: var(--max);
    margin: 0 auto;
}

.footer__title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(2.4rem, 8vw, 5.5rem);
    line-height: 0.98;
    letter-spacing: -0.02em;
    margin-bottom: 46px;
}
.footer__title em { font-style: italic; color: var(--amber); }

.footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    border-top: 1px solid var(--line);
}
.footer__links a {
    flex: 1 1 200px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line-soft);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--dust);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: 20px;
    transition: color 0.4s var(--ease), padding-left 0.4s var(--ease);
}
.footer__links a::after { content: '↗'; opacity: 0.4; }
.footer__links a:hover { color: var(--bone); padding-left: 10px; }
.footer__links a:hover::after { opacity: 1; color: var(--amber); }

.footer__base {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 46px;
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--dust);
}

/* =========================================================
   SUB-PAGE (mission) TYPOGRAPHY
   ========================================================= */

.mission-header {
    padding: clamp(130px, 20vh, 200px) var(--gutter) 0;
    max-width: var(--max);
    margin: 0 auto;
    text-align: center;
}
.mission-header .part-tag,
.mission-header .kicker {
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--amber);
    display: block;
    margin-bottom: 22px;
}
.mission-header h1 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(2.4rem, 7vw, 4.8rem);
    line-height: 1.02;
    letter-spacing: -0.02em;
}
.mission-header .tagline {
    margin-top: 20px;
    color: var(--dust);
    font-size: 1.05rem;
    max-width: 62ch;
    margin-left: auto;
    margin-right: auto;
}
.mission-header .tags { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }

.mission-content {
    max-width: 720px;
    margin: 0 auto;
    padding: clamp(50px, 9vh, 90px) var(--gutter) clamp(80px, 14vh, 150px);
}
.mission-content section + section { margin-top: clamp(46px, 8vh, 86px); }
.mission-content h3 {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--amber);
    font-weight: 400;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}
.mission-content p { color: var(--dust); font-size: 1rem; line-height: 1.85; }
.mission-content p + p { margin-top: 16px; }
.mission-content strong { color: var(--bone); font-weight: 400; }
.mission-content em { color: var(--bone); font-style: italic; }
.mission-content ul { list-style: none; margin-top: 18px; }
.mission-content ul li {
    position: relative;
    padding-left: 24px;
    margin-top: 14px;
    color: var(--dust);
}
.mission-content ul li::before {
    content: '';
    position: absolute;
    left: 0; top: 0.85em;
    width: 12px; height: 1px;
    background: var(--amber);
}

/* =========================================================
   MOTION PREFERENCES
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    #grain { animation: none; opacity: 0.14; }
    .cue::after { animation: none; }
    [data-reveal] { opacity: 1; transform: none; transition: none; }
    * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}