/* ============================================================
   MEMORA — base.css
   Reset · Design Tokens · Typography · Shared Utilities
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=Instrument+Serif:ital@0;1&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg:         #0B1612;
  --bg-card:    #111E15;
  --bg-lift:    #172118;

  /* Gold palette */
  --gold:       #C4A24A;
  --gold-dim:   rgba(196, 162, 74, 0.15);
  --gold-glow:  rgba(196, 162, 74, 0.08);

  /* Text */
  --ink:        #EDE3CC;
  --ink-muted:  #A09882;

  /* Accents */
  --ash:        #7A9480;
  --red:        #B84C2E;

  /* Borders */
  --border:     rgba(196, 162, 74, 0.18);
  --border-hi:  rgba(196, 162, 74, 0.42);

  /* Radii */
  --radius-sm:  4px;
  --radius-md:  10px;
  --radius-lg:  20px;

  /* Type scale */
  --text-xs:    0.6875rem;   /* 11px */
  --text-sm:    0.8125rem;   /* 13px */
  --text-base:  1rem;        /* 16px */
  --text-md:    1.125rem;    /* 18px */
  --text-lg:    1.375rem;    /* 22px */
  --text-xl:    1.75rem;     /* 28px */
  --text-2xl:   2.25rem;     /* 36px */
  --text-3xl:   3rem;        /* 48px */
  --text-4xl:   4rem;        /* 64px */

  /* Spacing */
  --space-1:    0.25rem;
  --space-2:    0.5rem;
  --space-3:    0.75rem;
  --space-4:    1rem;
  --space-5:    1.25rem;
  --space-6:    1.5rem;
  --space-8:    2rem;
  --space-10:   2.5rem;
  --space-12:   3rem;
  --space-16:   4rem;
  --space-20:   5rem;
  --space-24:   6rem;

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:    cubic-bezier(0.4, 0, 1, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast:   160ms;
  --dur-base:   280ms;
  --dur-slow:   480ms;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.6);
  --shadow-gold: 0 0 24px rgba(196, 162, 74, 0.2);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.15;
  font-weight: inherit;
}

p {
  max-width: 68ch;
}

::selection {
  background: var(--gold-dim);
  color: var(--gold);
}

/* Focus ring — keyboard-only */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--border-hi);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ── Typography helpers ───────────────────────────────────── */
.font-display   { font-family: 'Bebas Neue', sans-serif; letter-spacing: 0.04em; }
.font-serif     { font-family: 'Cormorant Garamond', serif; }
.font-instrument{ font-family: 'Instrument Serif', serif; }
.font-sans      { font-family: 'DM Sans', sans-serif; }

.text-gold      { color: var(--gold); }
.text-muted     { color: var(--ink-muted); }
.text-ash       { color: var(--ash); }

.italic         { font-style: italic; }
.tracking-wide  { letter-spacing: 0.08em; }
.tracking-wider { letter-spacing: 0.16em; }
.uppercase      { text-transform: uppercase; }

/* ── Screen / Router ─────────────────────────────────────── */
/* Used by router.js — only .active screen is visible */
.screen {
  display: none;
  width: 100%;
  min-height: 100dvh;
}
.screen.active {
  display: block;
}

/* ── Accessibility ───────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ── Reveal (scroll-fade-up) ─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal-group > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.reveal-group.in > *:nth-child(1)  { transition-delay: 0ms; }
.reveal-group.in > *:nth-child(2)  { transition-delay: 80ms; }
.reveal-group.in > *:nth-child(3)  { transition-delay: 160ms; }
.reveal-group.in > *:nth-child(4)  { transition-delay: 240ms; }
.reveal-group.in > *:nth-child(5)  { transition-delay: 320ms; }
.reveal-group.in > *               { opacity: 1; transform: translateY(0); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: 'DM Sans', sans-serif;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition:
    background var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-primary {
  background: var(--gold);
  color: var(--bg);
  border: 1.5px solid var(--gold);
  box-shadow: 0 2px 12px rgba(196, 162, 74, 0.25);
}
.btn-primary:hover {
  background: #d4b05a;
  border-color: #d4b05a;
  box-shadow: 0 4px 24px rgba(196, 162, 74, 0.4);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 6px rgba(196, 162, 74, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--gold);
  border: 1.5px solid var(--border-hi);
}
.btn-ghost:hover {
  background: var(--gold-dim);
  border-color: var(--gold);
  box-shadow: 0 0 16px var(--gold-dim);
  transform: translateY(-1px);
}
.btn-ghost:active {
  transform: translateY(0);
}

/* Disabled state */
.btn-primary:disabled,
.btn-ghost:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  pointer-events: none;
}

/* Loading shimmer on button */
.btn-primary.loading::after,
.btn-ghost.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.15) 50%, transparent 100%);
  animation: btn-shimmer 1.2s infinite;
}
@keyframes btn-shimmer {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}

/* ── Tag / pill ──────────────────────────────────────────── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2rem 0.65rem;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--gold-dim);
  color: var(--gold);
  font-family: 'DM Sans', sans-serif;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}
.tag--ash {
  color: var(--ash);
  border-color: rgba(122, 148, 128, 0.3);
  background: rgba(122, 148, 128, 0.08);
}
.tag--red {
  color: var(--red);
  border-color: rgba(184, 76, 46, 0.3);
  background: rgba(184, 76, 46, 0.08);
}

/* ── Spinner ─────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
.spinner--lg {
  width: 2.5rem;
  height: 2.5rem;
  border-width: 3px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Divider ─────────────────────────────────────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--ink-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Card ────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: border-color var(--dur-base) var(--ease-out);
}
.card:hover {
  border-color: var(--border-hi);
}
.card--lift {
  background: var(--bg-lift);
}

/* ── Toast ───────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}
.toast {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--bg-lift);
  border: 1px solid var(--border-hi);
  color: var(--ink);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-lg);
  animation: toast-in var(--dur-base) var(--ease-out) forwards;
  pointer-events: auto;
  white-space: nowrap;
}
.toast--error   { border-color: rgba(184,76,46,0.5); color: #e08060; }
.toast--success { border-color: rgba(122,148,128,0.5); color: var(--ash); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(8px) scale(0.96); }
}
.toast.removing {
  animation: toast-out var(--dur-fast) var(--ease-in) forwards;
}

/* ── Overlay / Modal backdrop ────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 22, 18, 0.85);
  backdrop-filter: blur(8px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}
.overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* ── Form elements ───────────────────────────────────────── */
.input,
.textarea,
.select {
  width: 100%;
  background: var(--bg-lift);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--ink);
  padding: 0.75rem 1rem;
  font-size: var(--text-sm);
  line-height: 1.5;
  transition:
    border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
  appearance: none;
}
.input::placeholder,
.textarea::placeholder { color: var(--ink-muted); }
.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-dim);
}
.textarea {
  resize: vertical;
  min-height: 120px;
}

.label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-2);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.field-error {
  font-size: var(--text-xs);
  color: var(--red);
  margin-top: var(--space-1);
}

/* ── Grain texture overlay ───────────────────────────────── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9990;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ── Utility layout ──────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--narrow {
  max-width: 680px;
}
.container--wide {
  max-width: 1400px;
}

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.justify-center{ justify-content: center; }
.justify-between{ justify-content: space-between; }
.gap-2        { gap: var(--space-2); }
.gap-4        { gap: var(--space-4); }
.gap-6        { gap: var(--space-6); }
.gap-8        { gap: var(--space-8); }

.mt-auto      { margin-top: auto; }
.mx-auto      { margin-inline: auto; }

.w-full       { width: 100%; }
.text-center  { text-align: center; }
.text-right   { text-align: right; }

/* ── Responsive breakpoints ──────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --text-3xl: 2.25rem;
    --text-4xl: 2.75rem;
  }
  .container {
    padding-inline: var(--space-4);
  }
  .card {
    padding: var(--space-6);
  }
}

@media (max-width: 480px) {
  .btn-primary,
  .btn-ghost {
    padding: 0.65rem 1.25rem;
    font-size: var(--text-xs);
  }
}