/* ==========================================
   Millennium Dawn - Public pages
   Landing (homepage) + authentication screens

   Visual language: grand-strategy command console. Dark slate ground, gold
   command accents, angular panels with corner brackets, uppercase military
   labels and a faint map graticule — Hearts of Iron in a browser.
   ========================================== */

:root {
  --gold: #e0b04a;
  --gold-dim: #a8802f;
  --gold-glow: rgba(224, 176, 74, 0.22);
  --steel: #16202e;
  --steel-light: #1d2a3a;
  --line: rgba(224, 176, 74, 0.18);
}

/* Faint graticule + glows shared by public pages. Pure CSS: no extra asset,
   so the landing page stays fast. */
.md-public {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  background:
    radial-gradient(1200px 560px at 50% -12%, rgba(224, 176, 74, 0.07) 0%, transparent 62%),
    radial-gradient(900px 520px at 88% 108%, rgba(56, 189, 248, 0.06) 0%, transparent 58%),
    var(--bg-deep);
}
.md-public::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  background-image:
    repeating-linear-gradient(to right, rgba(148, 163, 184, 0.055) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(to bottom, rgba(148, 163, 184, 0.055) 0 1px, transparent 1px 84px);
  mask-image: radial-gradient(ellipse at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 0%, transparent 78%);
}
.md-public > * { position: relative; z-index: 1; }

/* ---- Header ---- */
.md-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.85rem 1.6rem;
  background: rgba(2, 6, 23, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.md-header .brand {
  font-family: var(--font-heading); font-weight: 800; font-size: 1.05rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  display: flex; align-items: center; gap: 0.6rem; color: var(--fg);
}
.md-header .brand .dot {
  width: 9px; height: 9px; transform: rotate(45deg);
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  box-shadow: 0 0 12px var(--gold-glow);
}
.md-header nav { display: flex; gap: 0.55rem; align-items: center; }

/* ---- Buttons (gold command variant) ---- */
.btn-gold {
  display: inline-block; cursor: pointer; text-align: center;
  font-family: var(--font-heading); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em; font-size: 0.82rem;
  padding: 0.8rem 2rem; border-radius: 3px;
  color: #17130a; border: 1px solid var(--gold);
  background: linear-gradient(180deg, #f0c261, var(--gold-dim));
  box-shadow: 0 6px 22px rgba(224, 176, 74, 0.18);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn-gold:hover { transform: translateY(-1px); box-shadow: 0 10px 28px rgba(224, 176, 74, 0.3); color: #17130a; }
.btn-ghost {
  display: inline-block; cursor: pointer; text-align: center;
  font-family: var(--font-heading); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em; font-size: 0.82rem;
  padding: 0.8rem 2rem; border-radius: 3px;
  color: var(--fg); border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); background: rgba(224, 176, 74, 0.06); }
.btn-gold.sm, .btn-ghost.sm { padding: 0.45rem 1.05rem; font-size: 0.72rem; }

/* ---- Angular panel with corner brackets (the HOI signature) ---- */
.panel-brackets { position: relative; }
.panel-brackets::before,
.panel-brackets::after {
  content: ''; position: absolute; width: 14px; height: 14px; pointer-events: none;
  border-color: var(--gold); opacity: 0.75;
}
.panel-brackets::before { top: -1px; left: -1px; border-top: 2px solid; border-left: 2px solid; }
.panel-brackets::after { bottom: -1px; right: -1px; border-bottom: 2px solid; border-right: 2px solid; }

/* ---- Hero ---- */
.hero { text-align: center; padding: 5.5rem 1.5rem 3rem; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--gold); background: rgba(224, 176, 74, 0.07);
  border: 1px solid var(--line); border-radius: 2px;
  padding: 0.4rem 0.95rem; margin-bottom: 1.6rem;
}
.hero h1 {
  font-family: var(--font-heading); font-weight: 800;
  font-size: clamp(2.5rem, 6.4vw, 4.4rem); line-height: 1.02;
  letter-spacing: -0.02em; margin: 0 auto 1.1rem; max-width: 15ch; color: var(--fg);
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--gold) 0%, #f5d489 55%, var(--gold-dim) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead {
  color: var(--fg-mute); font-size: 1.06rem; line-height: 1.75;
  max-width: 610px; margin: 0 auto 2.2rem;
}
.hero-actions { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 1.1rem; font-size: 0.74rem; color: var(--fg-dim); letter-spacing: 0.04em; }

/* ---- Command stat bar ---- */
.stat-strip {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0;
  max-width: 940px; margin: 2.5rem auto 0;
  border: 1px solid var(--line); border-radius: 3px;
  background: linear-gradient(180deg, rgba(22, 32, 46, 0.75), rgba(2, 6, 23, 0.5));
}
.stat-strip .stat { flex: 1 1 150px; text-align: center; padding: 1.1rem 0.75rem; border-right: 1px solid rgba(224, 176, 74, 0.1); }
.stat-strip .stat:last-child { border-right: 0; }
.stat-strip .stat .num {
  font-family: var(--font-mono); font-weight: 700; font-size: 1.6rem; color: var(--gold);
}
.stat-strip .stat .label {
  font-size: 0.64rem; color: var(--fg-dim); text-transform: uppercase; letter-spacing: 0.12em; margin-top: 0.2rem;
}

/* ---- Game UI preview (a styled mock of the real command screen) ---- */
.preview-shell {
  max-width: 1080px; margin: 3.5rem auto 0; padding: 0 1.5rem;
}
.preview-frame {
  border: 1px solid var(--line); border-radius: 4px; overflow: hidden;
  background: var(--bg-deep); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}
.preview-topbar {
  display: flex; align-items: center; gap: 1.1rem; flex-wrap: wrap;
  padding: 0.55rem 0.9rem; background: linear-gradient(180deg, #16202e, #0b1220);
  border-bottom: 1px solid var(--line); font-family: var(--font-mono); font-size: 0.68rem;
}
.preview-topbar .flag { width: 20px; height: 14px; background: linear-gradient(180deg, #3c5a99, #22345c); border: 1px solid rgba(255,255,255,0.2); }
.preview-topbar .nation { color: var(--fg); font-weight: 700; letter-spacing: 0.06em; }
.preview-topbar .res { color: var(--fg-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.preview-topbar .res b { color: var(--gold); font-weight: 700; margin-left: 0.25rem; }
.preview-topbar .date { margin-left: auto; color: var(--gold); font-weight: 700; letter-spacing: 0.06em; }
.preview-body { display: flex; min-height: 260px; }
.preview-side {
  width: 190px; flex: none; border-right: 1px solid rgba(224, 176, 74, 0.12);
  padding: 0.85rem; background: rgba(22, 32, 46, 0.5);
}
.preview-side h4 {
  font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--gold); margin-bottom: 0.7rem;
}
.preview-row { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.63rem; color: var(--fg-mute); padding: 0.32rem 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
.preview-row span:last-child { color: var(--fg); }
.preview-map {
  flex: 1; position: relative;
  background:
    radial-gradient(520px 260px at 30% 40%, rgba(56, 189, 248, 0.09), transparent 60%),
    repeating-linear-gradient(to right, rgba(148,163,184,0.06) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(to bottom, rgba(148,163,184,0.06) 0 1px, transparent 1px 46px),
    #060d1a;
}
.preview-unit {
  position: absolute; display: flex; align-items: center; gap: 0.3rem;
  font-family: var(--font-mono); font-size: 0.58rem; color: #fff;
  padding: 0.2rem 0.4rem; border-radius: 2px; border: 1px solid rgba(255,255,255,0.25);
}
.preview-unit.own { background: rgba(34, 197, 94, 0.75); }
.preview-unit.foe { background: rgba(239, 68, 68, 0.75); }
.preview-front {
  position: absolute; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.65;
}
.preview-caption {
  text-align: center; font-size: 0.7rem; color: var(--fg-dim);
  margin-top: 0.85rem; letter-spacing: 0.05em;
}

/* ---- Sections ---- */
.section { max-width: 1080px; margin: 0 auto; padding: 4.5rem 1.5rem; width: 100%; }
.section-head { text-align: center; max-width: 660px; margin: 0 auto 2.8rem; }
.section-head .kicker {
  font-size: 0.66rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 0.7rem;
}
.section-head h2 {
  font-family: var(--font-heading); font-size: clamp(1.7rem, 3.6vw, 2.4rem);
  margin-bottom: 0.7rem; letter-spacing: -0.01em;
}
.section-head p { color: var(--fg-mute); font-size: 0.98rem; line-height: 1.7; }

/* ---- Feature grid ---- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.feature-card {
  background: linear-gradient(180deg, rgba(22, 32, 46, 0.72), rgba(2, 6, 23, 0.45));
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 3px; padding: 1.7rem 1.4rem;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}
.feature-card:hover { transform: translateY(-3px); border-color: var(--line); }
.feature-card .ic {
  width: 42px; height: 42px; border-radius: 3px; display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; margin-bottom: 1rem;
  background: rgba(224, 176, 74, 0.1); border: 1px solid var(--line);
}
.feature-card h3 {
  font-size: 0.8rem; margin-bottom: 0.55rem; color: var(--gold);
  text-transform: uppercase; letter-spacing: 0.1em;
}
.feature-card p { font-size: 0.86rem; color: var(--fg-mute); line-height: 1.65; }

/* ---- Era timeline ---- */
.timeline {
  position: relative; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem; padding-top: 1.6rem;
}
.timeline::before {
  content: ''; position: absolute; top: 6px; left: 4%; right: 4%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), var(--gold), var(--gold-dim), transparent);
  opacity: 0.55;
}
.era { text-align: center; position: relative; padding-top: 1.1rem; }
.era::before {
  content: ''; position: absolute; top: -6px; left: 50%; margin-left: -5px;
  width: 10px; height: 10px; transform: rotate(45deg);
  background: var(--gold); box-shadow: 0 0 10px var(--gold-glow);
}
.era .year { font-family: var(--font-mono); font-size: 1.1rem; font-weight: 700; color: var(--gold); }
.era h4 { font-size: 0.8rem; margin: 0.35rem 0 0.3rem; color: var(--fg); text-transform: uppercase; letter-spacing: 0.07em; }
.era p { font-size: 0.78rem; color: var(--fg-dim); line-height: 1.6; }

/* ---- Steps ---- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; counter-reset: step; }
.step {
  position: relative; padding: 1.7rem 1.4rem 1.5rem;
  background: rgba(22, 32, 46, 0.5); border: 1px solid rgba(255, 255, 255, 0.07); border-radius: 3px;
}
.step::before {
  counter-increment: step; content: '0' counter(step);
  font-family: var(--font-mono); font-weight: 700; font-size: 0.95rem;
  color: var(--gold); display: block; margin-bottom: 0.75rem; letter-spacing: 0.06em;
}
.step h3 { font-size: 0.98rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.85rem; color: var(--fg-mute); line-height: 1.65; }

/* ---- FAQ ---- */
.faq { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 0.55rem; }
.faq details {
  background: rgba(22, 32, 46, 0.55); border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 3px; padding: 0.95rem 1.2rem; transition: border-color var(--transition-fast);
}
.faq details[open] { border-color: var(--line); }
.faq summary {
  cursor: pointer; font-weight: 600; color: var(--fg); list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem; font-size: 0.94rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--gold); font-size: 1.25rem; line-height: 1; }
.faq details[open] summary::after { content: '\2212'; }
.faq p { color: var(--fg-mute); font-size: 0.89rem; line-height: 1.75; margin-top: 0.75rem; }

/* ---- Final CTA ---- */
.cta-band {
  text-align: center; max-width: 860px; margin: 1rem auto 4.5rem; padding: 3.2rem 1.6rem;
  background: linear-gradient(180deg, rgba(224, 176, 74, 0.08), rgba(2, 6, 23, 0.3));
  border: 1px solid var(--line); border-radius: 4px;
}
.cta-band h2 { font-family: var(--font-heading); font-size: clamp(1.7rem, 3.6vw, 2.3rem); margin-bottom: 0.7rem; }
.cta-band p { color: var(--fg-mute); margin-bottom: 1.7rem; }

/* ---- Footer ---- */
.md-footer { margin-top: auto; border-top: 1px solid var(--line); padding: 2.6rem 1.5rem 1.6rem; background: rgba(2, 6, 23, 0.72); }
.md-footer .cols { max-width: 1080px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 2.4rem; justify-content: space-between; }
.md-footer h4 { color: var(--gold); font-size: 0.68rem; margin-bottom: 0.85rem; text-transform: uppercase; letter-spacing: 0.14em; }
.md-footer a { display: block; color: var(--fg-dim); font-size: 0.82rem; margin-bottom: 0.45rem; }
.md-footer a:hover { color: var(--gold); }
.md-footer .copy {
  max-width: 1080px; margin: 2rem auto 0; padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--fg-dim); font-size: 0.74rem; text-align: center;
}

/* ==========================================
   Authentication (login / register)
   ========================================== */
.auth-split { flex: 1; display: grid; grid-template-columns: 1.05fr 1fr; min-height: 100vh; }
.auth-brand {
  position: relative; padding: 3rem 3.2rem; display: flex; flex-direction: column; justify-content: center;
  background:
    radial-gradient(700px 400px at 20% 10%, rgba(224, 176, 74, 0.12), transparent 60%),
    radial-gradient(600px 400px at 80% 90%, rgba(56, 189, 248, 0.12), transparent 55%),
    var(--bg-surface);
  border-right: 1px solid var(--line); overflow: hidden;
}
.auth-brand .brand-logo {
  font-family: var(--font-heading); font-weight: 800; font-size: 1.05rem;
  text-transform: uppercase; letter-spacing: 0.08em;
  display: flex; align-items: center; gap: 0.6rem; margin-bottom: 2.4rem; color: var(--fg);
}
.auth-brand .brand-logo .dot {
  width: 10px; height: 10px; transform: rotate(45deg);
  background: linear-gradient(135deg, var(--gold), var(--gold-dim)); box-shadow: 0 0 14px var(--gold-glow);
}
.auth-brand h2 { font-family: var(--font-heading); font-size: clamp(1.8rem, 3vw, 2.5rem); line-height: 1.1; margin-bottom: 1rem; max-width: 15ch; }
.auth-brand .sub { color: var(--fg-mute); font-size: 1rem; line-height: 1.7; max-width: 42ch; margin-bottom: 2rem; }
.auth-brand ul { list-style: none; display: flex; flex-direction: column; gap: 0.85rem; }
.auth-brand li { display: flex; align-items: flex-start; gap: 0.7rem; color: var(--fg); font-size: 0.9rem; }
.auth-brand li .tick {
  flex: none; width: 21px; height: 21px; border-radius: 2px; display: flex; align-items: center; justify-content: center;
  background: rgba(224, 176, 74, 0.14); color: var(--gold); font-size: 0.72rem; margin-top: 1px; border: 1px solid var(--line);
}

.auth-form-side { display: flex; align-items: center; justify-content: center; padding: 2.5rem 1.5rem; }
.auth-card { width: 100%; max-width: 400px; }
.auth-card h1 { font-family: var(--font-heading); font-size: 1.6rem; margin-bottom: 0.35rem; }
.auth-card .muted { color: var(--fg-mute); font-size: 0.9rem; margin-bottom: 1.8rem; }
.field { margin-bottom: 1.1rem; }
.field label { display: block; margin-bottom: 0.4rem; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.11em; text-transform: uppercase; color: var(--fg-mute); }
.field .hint { font-size: 0.72rem; color: var(--fg-dim); margin-top: 0.35rem; }
.auth-check { display: flex; align-items: flex-start; gap: 0.55rem; font-size: 0.82rem; color: var(--fg-mute); margin-bottom: 1.4rem; }
.auth-check input { width: auto; margin-top: 0.15rem; }
.auth-alt { text-align: center; margin-top: 1.5rem; font-size: 0.88rem; color: var(--fg-mute); }
.auth-alt a { font-weight: 600; color: var(--gold); }
.auth-back { display: inline-block; margin-top: 1.4rem; font-size: 0.78rem; color: var(--fg-dim); }

@media (max-width: 900px) {
  .preview-side { display: none; }
}
@media (max-width: 860px) {
  .auth-split { grid-template-columns: 1fr; }
  .auth-brand { display: none; }
  .hero { padding-top: 3.5rem; }
}