/* ============================================================
   Posthum.ai — Design System & Global Styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=DM+Mono:wght@300;400&family=Outfit:wght@200;300;400&display=swap');

/* ── VARIABLES ── */
:root {
  --ink:        #0a0a0f;
  --void:       #050508;
  --ash:        #1a1a2e;
  --mist:       #8a8aa0;
  --silver:     #c8c8d8;
  --gold:       #c9a96e;
  --gold-light: #e8d5b0;
  --white:      #f0eff5;
  --accent:     #7c6fa0;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;
  --font-body:    'Outfit', system-ui, sans-serif;

  --nav-height: 72px;
  --max-width:  1200px;
  --radius:     0px;

  --transition-fast:   0.2s ease;
  --transition-medium: 0.35s ease;
  --transition-slow:   0.6s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--void);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── GRAIN OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.35;
  pointer-events: none;
  z-index: 9000;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.1;
}

.label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}

/* ── LAYOUT ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 4rem;
}

@media (max-width: 768px) {
  .container { padding: 0 1.5rem; }
}

/* ── BUTTONS ── */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 1rem 2.5rem;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(201,169,110,0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--silver);
  border: 1px solid rgba(200,200,216,0.22);
}

.btn-ghost:hover {
  border-color: rgba(200,200,216,0.6);
  color: var(--white);
}

.btn-block {
  display: block;
  text-align: center;
  width: 100%;
}

/* ── NAVIGATION ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4rem;
  background: linear-gradient(to bottom, rgba(5,5,8,0.96) 0%, transparent 100%);
  backdrop-filter: blur(3px);
  transition: background var(--transition-medium);
}

.nav.scrolled {
  background: rgba(5,5,8,0.97);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-decoration: none;
}

.nav-logo span {
  font-style: italic;
  color: var(--mist);
  font-size: 0.88em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  transition: color var(--transition-fast);
}

.nav-links a:hover { color: var(--gold); }

.nav-cta {
  font-family: var(--font-mono) !important;
  font-size: 0.72rem !important;
  color: var(--gold) !important;
  border: 1px solid rgba(201,169,110,0.35);
  padding: 0.55rem 1.3rem;
  transition: all var(--transition-fast) !important;
}

.nav-cta:hover {
  background: rgba(201,169,110,0.1) !important;
  border-color: var(--gold) !important;
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--mist);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav { padding: 0 1.5rem; }
  .nav-links { display: none; }
  .nav-burger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background: rgba(5,5,8,0.98);
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    z-index: 400;
  }

  .nav-links.open a {
    font-size: 1.1rem;
  }
}

/* ── SECTION DIVIDER ── */
.divider {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 160px;
  margin: 0 auto;
  padding: 1rem 0;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
}

.divider::before { background: linear-gradient(to right, transparent, var(--gold)); }
.divider::after  { background: linear-gradient(to left, transparent, var(--gold)); }

.divider-dot {
  width: 4px; height: 4px;
  background: var(--gold);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── WAVEFORM ── */
.waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 64px;
}

.wave-bar {
  width: 3px;
  background: var(--gold);
  border-radius: 2px;
  opacity: 0.6;
  animation: waveDance var(--dur, 1.2s) ease-in-out infinite var(--delay, 0s) alternate;
}

@keyframes waveDance {
  from { height: 6px;         opacity: 0.25; }
  to   { height: var(--h, 30px); opacity: 0.85; }
}

/* ── CORNER BRACKETS ── */
.bracketed {
  position: relative;
}

.bracketed::before,
.bracketed::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-color: rgba(201,169,110,0.35);
  border-style: solid;
}

.bracketed::before {
  top: -1px; left: -1px;
  border-width: 1px 0 0 1px;
}

.bracketed::after {
  bottom: -1px; right: -1px;
  border-width: 0 1px 1px 0;
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 2.5rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.75rem;
  color: var(--mist);
  letter-spacing: 0.08em;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.footer-links a:hover { opacity: 1; }

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: rgba(138,138,160,0.4);
  letter-spacing: 0.1em;
}

@media (max-width: 768px) {
  .footer {
    padding: 2rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ── FORM ── */
.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--mist);
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(10,10,15,0.85);
  border: 1px solid rgba(255,255,255,0.09);
  color: var(--white);
  padding: 0.85rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 300;
  outline: none;
  transition: border-color var(--transition-fast);
  -webkit-appearance: none;
  border-radius: 0;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(201,169,110,0.5);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(138,138,160,0.35);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-note {
  font-size: 0.73rem;
  color: rgba(138,138,160,0.45);
  line-height: 1.65;
  margin-top: 1.2rem;
}

/* ── TOAST NOTIFICATION ── */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(26,26,46,0.97);
  border: 1px solid rgba(201,169,110,0.3);
  color: var(--silver);
  padding: 1rem 1.5rem;
  font-size: 0.85rem;
  font-family: var(--font-body);
  max-width: 320px;
  z-index: 9999;
  transform: translateY(120%);
  opacity: 0;
  transition: all var(--transition-medium);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success { border-color: rgba(100,200,150,0.4); }
.toast.error   { border-color: rgba(220,100,100,0.4); }