/*
Theme Name: Vintage Mercedes 170 S
Theme URI: https://www.vintagemercedes.com.au/
Author: Solara
Description: Editorial single-page showcase theme for the 1951 Mercedes-Benz 170 S. Solara navy & gold.
Version: 1.0.0
License: GPL-2.0-or-later
Text Domain: vintage-mercedes-170s
*/

/* =========================================================
   Mercedes-Benz 170 S — Vintage Mercedes
   Design system: editorial, sophisticated, restrained.
   ========================================================= */

:root {
  /* Palette — Solara navy & gold */
  --ink:        #021D49;   /* Solara navy */
  --ink-soft:   #0a2a5e;
  --ink-mid:    #123a78;   /* lift for gradients */
  --ink-deep:   #01102b;   /* deepest navy */
  --paper:      #f5f2ec;   /* warm ivory */
  --paper-2:    #ece7dd;
  --graphite:   #2a3650;   /* cool slate ink for body copy */
  --smoke:      #8b93a6;
  --line:       #d8d2c6;   /* hairline on paper */
  --line-dark:  rgba(189,154,89,.16);

  --gold:       #BD9A59;   /* Solara gold (brand guide) */
  --gold-soft:  #d8be8a;
  --gold-deep:  #8c6f3a;   /* facet shadow for the emblem */
  --green:      #1f3a2e;   /* deep racing accent */

  /* Type */
  --serif: "Cormorant Garamond", "Times New Roman", Georgia, serif;
  --sans:  "Inter", "Helvetica Neue", Arial, sans-serif;

  /* Rhythm */
  --container: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --section-y: clamp(72px, 11vw, 160px);

  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--gold); color: var(--ink); }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---------- Shared type ---------- */
.eyebrow {
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--gold-soft);
}
.eyebrow--dark { color: var(--gold); }

.section-head { margin-bottom: clamp(36px, 5vw, 64px); }
.section-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -.01em;
  margin-top: .5rem;
}
.section-title em { font-style: italic; color: var(--gold); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--sans);
  font-size: .78rem; font-weight: 500;
  letter-spacing: .18em; text-transform: uppercase;
  padding: 1.05em 2.2em;
  border: 1px solid transparent;
  border-radius: 1px;
  cursor: pointer;
  transition: background .4s var(--ease), color .4s var(--ease),
              border-color .4s var(--ease), transform .4s var(--ease);
}
.btn--gold { background: var(--gold); color: var(--ink); }
.btn--gold:hover { background: var(--gold-soft); transform: translateY(-2px); }
.btn--ghost { border-color: rgba(245,242,236,.35); color: var(--paper); }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold-soft); }
.btn--block { width: 100%; }

.link-arrow {
  display: inline-block;
  margin-top: 1.4rem;
  font-size: .82rem; letter-spacing: .14em; text-transform: uppercase;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  padding-bottom: .5rem;
  transition: border-color .4s var(--ease), color .4s var(--ease);
}
.link-arrow span { transition: transform .4s var(--ease); display: inline-block; }
.link-arrow:hover { color: var(--gold); border-color: var(--gold); }
.link-arrow:hover span { transform: translateX(6px); }

/* =========================================================
   NAV
   ========================================================= */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .5s var(--ease), backdrop-filter .5s var(--ease),
              border-color .5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav__inner {
  max-width: var(--container); margin-inline: auto;
  padding: clamp(16px, 2vw, 22px) var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}
.nav.is-scrolled {
  background: rgba(2,29,73,.86);
  backdrop-filter: blur(14px) saturate(120%);
  border-bottom-color: var(--line-dark);
}

.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--paper); }
.brand__star { width: 30px; height: 30px; flex: none; }
.brand__word {
  font-family: var(--serif); font-size: 1.18rem; font-weight: 600;
  letter-spacing: .04em;
}
.star-ring  { fill: none; stroke: var(--gold); stroke-width: 5; }
.star-hub   { fill: var(--gold); }
.star-facets .l { fill: var(--gold); }
.star-facets .d { fill: var(--gold-deep); }

.nav__links { display: flex; align-items: center; gap: clamp(1.1rem, 2.4vw, 2.4rem); }
.nav__links a {
  color: rgba(245,242,236,.78);
  font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; font-weight: 400;
  transition: color .35s var(--ease);
}
.nav__links a:hover { color: var(--gold-soft); }
.nav__cta {
  border: 1px solid rgba(189,154,89,.55);
  padding: .7em 1.4em; border-radius: 1px;
  color: var(--gold-soft) !important;
}
.nav__cta:hover { background: var(--gold); color: var(--ink) !important; border-color: var(--gold); }

.nav__toggle { display: none; background: none; border: 0; cursor: pointer; width: 34px; height: 26px; position: relative; }
.nav__toggle span {
  position: absolute; left: 0; right: 0; height: 1.5px; background: var(--paper);
  transition: transform .4s var(--ease), opacity .3s;
}
.nav__toggle span:first-child { top: 8px; }
.nav__toggle span:last-child { bottom: 8px; }
.nav.is-open .nav__toggle span:first-child { transform: translateY(5px) rotate(45deg); }
.nav.is-open .nav__toggle span:last-child  { transform: translateY(-4px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  background:
    radial-gradient(125% 95% at 50% 0%, var(--ink-mid) 0%, var(--ink) 52%, var(--ink-deep) 100%);
  color: var(--paper);
  padding: 120px var(--gutter) 96px;
  overflow: hidden;
}

/* Full-bleed hero photograph, faded behind the headline.
   Set --hero-photo to a url() to activate (see README). */
.hero__photo {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: var(--hero-photo, none);
  background-size: cover; background-position: center 38%;
  opacity: .5;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 60%, transparent 100%);
          mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 60%, transparent 100%);
}
.hero::before {
  /* navy wash so the headline always stays legible over a photo */
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(2,29,73,.55) 0%, rgba(2,29,73,.30) 45%, rgba(1,16,43,.85) 100%),
    radial-gradient(80% 60% at 30% 40%, transparent 0%, rgba(1,16,43,.55) 100%);
}
.hero__grain {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    radial-gradient(rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: screen;
}
.hero::after {
  /* subtle gold horizon glow */
  content: ""; position: absolute; left: 50%; bottom: -40%;
  width: 130%; height: 70%; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(189,154,89,.20), transparent 70%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; max-width: var(--container); margin-inline: auto; width: 100%; }
.hero .eyebrow { margin-bottom: 1.6rem; }

.hero__title {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(3.1rem, 11vw, 9rem);
  line-height: .92; letter-spacing: -.02em;
}
.hero__title span { display: block; }
.hero__model { font-style: italic; color: var(--gold-soft); }
.hero__model em { font-style: italic; }

.hero__tag {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(1.15rem, 2.6vw, 1.8rem);
  color: rgba(245,242,236,.7);
  margin-top: 1.2rem;
}
.hero__rule { width: 64px; height: 1px; background: var(--gold); margin: 2.2rem 0; }
.hero__lede {
  max-width: 46ch; font-size: clamp(1rem, 1.4vw, 1.12rem);
  color: rgba(245,242,236,.62); font-weight: 300;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.6rem; }

.hero__scroll {
  position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%);
  z-index: 2; display: flex; flex-direction: column; align-items: center; gap: .8rem;
  font-size: .64rem; letter-spacing: .3em; text-transform: uppercase;
  color: rgba(245,242,236,.5);
}
.hero__scroll-line { width: 1px; height: 46px; background: linear-gradient(var(--gold), transparent); position: relative; overflow: hidden; }
.hero__scroll-line::after {
  content: ""; position: absolute; top: -50%; left: 0; width: 100%; height: 50%;
  background: var(--paper); animation: drop 2.4s var(--ease) infinite;
}
@keyframes drop { 0% { top: -50%; } 60%,100% { top: 100%; } }

/* =========================================================
   STATEMENT
   ========================================================= */
.statement { padding: var(--section-y) 0; background: var(--paper); }
.statement .container { max-width: 920px; }
.statement__lead {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.6rem, 3.6vw, 2.7rem);
  line-height: 1.28; letter-spacing: -.01em;
}
.statement__lead em { font-style: italic; color: var(--gold); }
.statement__body {
  margin-top: 1.8rem; max-width: 60ch;
  color: var(--graphite); font-size: 1.05rem;
}

/* =========================================================
   FEATURE IMAGE
   ========================================================= */
.feature { padding-bottom: var(--section-y); }
.feature__frame { width: 100%; padding-inline: var(--gutter); }
.feature__cap {
  display: flex; align-items: baseline; gap: 1rem;
  margin-top: 1.4rem; color: var(--smoke);
  font-size: .9rem; letter-spacing: .02em;
}
.feature__cap .num { font-family: var(--serif); font-size: 1.1rem; color: var(--gold); }

/* =========================================================
   PHOTO PLACEHOLDERS
   (swap .ph blocks for <img> — see README)
   ========================================================= */
.ph {
  position: relative; width: 100%; aspect-ratio: 4 / 3;
  background:
    linear-gradient(150deg, var(--ink-mid) 0%, var(--ink) 48%, var(--ink-deep) 100%);
  overflow: hidden;
  display: grid; place-items: center;
  border: 1px solid rgba(189,154,89,.14);
}
.ph::before {
  /* faint gold wash */
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(closest-side, rgba(189,154,89,.12), transparent 72%) center/70% 90% no-repeat;
}
/* Bespoke line-illustration sitting inside each plate */
.ph__art {
  position: absolute; inset: 0; width: 100%; height: 100%;
  color: var(--gold); opacity: .42;
  transition: opacity .6s var(--ease), transform .9s var(--ease);
}
figure:hover .ph__art { opacity: .6; transform: scale(1.03); }

/* Real photography */
.ph__img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform 1.1s var(--ease);
}
.ph:has(.ph__img)::before { display: none; }
figure:hover .ph__img,
.ph--wide:hover .ph__img,
.ph--tall:hover .ph__img { transform: scale(1.045); }

/* Caption tag on gallery photos */
.ph__tag {
  position: absolute; left: 18px; bottom: 16px; z-index: 2;
  font-size: .64rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--paper); font-weight: 500;
  padding: .5em .85em;
  background: rgba(1,16,43,.42); backdrop-filter: blur(6px);
  border: 1px solid rgba(189,154,89,.32);
}
.ph::after {
  /* sheen sweep on hover (driven by parent figure) */
  content: ""; position: absolute; top: 0; left: -60%; width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.07), transparent);
  transform: skewX(-18deg);
  transition: left .9s var(--ease);
}
.ph__label {
  position: relative; z-index: 1;
  font-family: var(--serif); font-style: italic;
  font-size: clamp(1.1rem, 2.2vw, 1.7rem);
  color: rgba(245,242,236,.34);
  letter-spacing: .02em;
}
.ph--wide { aspect-ratio: 21 / 9; }
.ph--tall { aspect-ratio: 3 / 4; }

figure:hover .ph::after { left: 130%; }

/* =========================================================
   SPECS
   ========================================================= */
.specs { padding: var(--section-y) 0; background: var(--paper-2); }
.specs__grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.spec {
  display: flex; flex-direction: column; gap: .45rem;
  padding: 1.7rem 1.4rem 1.7rem 0;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
.spec:nth-child(4n) { border-right: 0; padding-right: 0; }
.spec__k { font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--smoke); }
.spec__v { font-family: var(--serif); font-size: clamp(1.25rem, 2vw, 1.7rem); }

/* =========================================================
   PILLARS
   ========================================================= */
.pillars { padding: var(--section-y) 0; background: var(--ink); color: var(--paper); }
.pillars__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(2rem, 4vw, 4rem); }
.pillar__num {
  font-family: var(--serif); font-size: 2rem; color: var(--gold);
  display: block; margin-bottom: 1.2rem;
}
.pillar h3 { font-family: var(--serif); font-weight: 500; font-size: 1.6rem; margin-bottom: .8rem; }
.pillar p { color: rgba(245,242,236,.6); font-size: .98rem; }

/* =========================================================
   GALLERY
   ========================================================= */
.gallery { padding: var(--section-y) 0; background: var(--paper); }
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: clamp(12px, 1.4vw, 20px);
}
.g-item { overflow: hidden; }
.g-item .ph { aspect-ratio: auto; height: 100%; min-height: 240px; }
.g-item--tall { grid-row: span 2; }
.g-item--wide { grid-column: span 2; }

/* =========================================================
   PROVENANCE
   ========================================================= */
.provenance { padding: var(--section-y) 0; background: var(--paper-2); }
.provenance__grid {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
}
.provenance__text p { color: var(--graphite); margin-top: 1.2rem; max-width: 52ch; }
.provenance__text .section-title { margin-bottom: .4rem; }

/* =========================================================
   ENQUIRE
   ========================================================= */
.enquire { padding: var(--section-y) 0; background: var(--ink); color: var(--paper); }
.enquire__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: start; }
.enquire__title {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(2.2rem, 5vw, 3.6rem); line-height: 1.04; margin: .6rem 0 1.4rem;
}
.enquire__copy { color: rgba(245,242,236,.62); max-width: 42ch; }
.enquire__contacts { list-style: none; margin-top: 2.4rem; }
.enquire__contacts li {
  display: grid; grid-template-columns: 110px 1fr; gap: 1rem; align-items: baseline;
  padding: 1.1rem 0; border-top: 1px solid var(--line-dark); font-size: .98rem;
}
.enquire__contacts span { font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--smoke); }
.enquire__contacts a { border-bottom: 1px solid transparent; transition: border-color .35s, color .35s; }
.enquire__contacts a:hover { color: var(--gold-soft); border-color: var(--gold); }

/* Form */
.enquire__form { display: flex; flex-direction: column; gap: 1.4rem; }
.field { display: flex; flex-direction: column; gap: .6rem; }
.field label { font-size: .68rem; letter-spacing: .22em; text-transform: uppercase; color: var(--smoke); }
.field input, .field textarea {
  background: transparent; border: 0; border-bottom: 1px solid var(--line-dark);
  color: var(--paper); font-family: var(--sans); font-size: 1rem; font-weight: 300;
  padding: .7rem 0; transition: border-color .4s var(--ease);
}
.field textarea { resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: rgba(245,242,236,.3); }
.field input:focus, .field textarea:focus { outline: 0; border-bottom-color: var(--gold); }
.enquire__note { font-size: .85rem; color: var(--gold-soft); min-height: 1.2em; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer { background: var(--ink-deep); color: rgba(245,242,236,.55); padding: clamp(48px, 7vw, 84px) 0 clamp(36px, 5vw, 56px); }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: 1.1rem; text-align: center; }
.brand--footer { color: var(--paper); flex-direction: column; gap: 1rem; }
.brand--footer .brand__star { width: 42px; height: 42px; }
.footer__line { font-family: var(--serif); font-style: italic; font-size: 1.15rem; color: rgba(245,242,236,.75); }
.footer__fine { font-size: .76rem; letter-spacing: .04em; color: rgba(245,242,236,.4); max-width: 48ch; }

/* =========================================================
   REVEAL ANIMATION
   ========================================================= */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease) var(--d, 0s), transform .9s var(--ease) var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll-line::after { animation: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .provenance__grid, .enquire__grid { grid-template-columns: 1fr; }
  .provenance__img { order: 2; }
  .specs__grid { grid-template-columns: repeat(2, 1fr); }
  .spec:nth-child(4n) { border-right: 1px solid var(--line); padding-right: 1.4rem; }
  .spec:nth-child(2n) { border-right: 0; padding-right: 0; }
  .pillars__grid { grid-template-columns: 1fr; }
  .gallery__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav__links {
    position: fixed; inset: 0 0 0 auto; width: min(80vw, 320px);
    flex-direction: column; justify-content: center; align-items: flex-start; gap: 1.8rem;
    background: rgba(1,16,43,.97); backdrop-filter: blur(8px);
    padding: var(--gutter); transform: translateX(100%);
    transition: transform .5s var(--ease);
  }
  .nav.is-open .nav__links { transform: translateX(0); }
  .nav__links a { font-size: .95rem; }
  .nav__toggle { display: block; z-index: 101; }
}

@media (max-width: 560px) {
  .specs__grid { grid-template-columns: 1fr; }
  .spec, .spec:nth-child(4n) { border-right: 0; padding-right: 0; }
  .gallery__grid { grid-template-columns: 1fr; }
  .g-item--wide, .g-item--tall { grid-column: auto; grid-row: auto; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
}