/* ============================================================
   Mercury Finds — Design System
   Warm editorial. All-serif. Generous space.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght,SOFT,WONK@9..144,300..900,0..100,0..1&family=Newsreader:opsz,wght,ital@6..72,200..800,0;6..72,200..800,1&display=swap');

:root {
  /* ------ Color ------ */
  --color-bg: #FAF7F0;            /* warm cream */
  --color-bg-elev: #F5F0E5;        /* slightly darker cream for cards */
  --color-bg-deep: #EDE5D3;        /* deepest cream for borders/dividers */
  --color-ink: #1A1614;            /* deep warm ink — body text */
  --color-ink-soft: #4A413A;       /* secondary text */
  --color-ink-muted: #7A6F65;      /* tertiary text, captions */
  --color-rule: #D9CFB8;           /* horizontal rules, subtle borders */
  --color-accent: #B8472D;         /* terracotta — links, accents */
  --color-accent-deep: #8F3520;    /* hover state for accent */
  --color-accent-soft: #E8B8A8;    /* subtle accent backgrounds */

  /* ------ Typography ------ */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Newsreader', Georgia, 'Times New Roman', serif;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Type scale — modular, editorial */
  --type-xs: 0.75rem;     /* 12px — labels, captions */
  --type-sm: 0.875rem;    /* 14px — meta */
  --type-base: 1.0625rem; /* 17px — body, slightly larger for serif readability */
  --type-md: 1.25rem;     /* 20px — pull quotes, lede */
  --type-lg: 1.5rem;      /* 24px — h4 */
  --type-xl: 2rem;        /* 32px — h3 */
  --type-2xl: 2.75rem;    /* 44px — h2 */
  --type-3xl: 4rem;       /* 64px — h1 */
  --type-4xl: 5.5rem;     /* 88px — display hero */

  /* ------ Spacing ------ */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;
  --space-11: 12rem;

  /* ------ Layout ------ */
  --max-width-prose: 65ch;
  --max-width-content: 1100px;
  --max-width-wide: 1320px;

  /* ------ Motion ------ */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 180ms;
  --duration-base: 320ms;
  --duration-slow: 600ms;
}

/* ============================================================
   Reset & base
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--type-base);
  font-weight: var(--weight-regular);
  line-height: 1.6;
  font-feature-settings: 'kern', 'liga', 'calt';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  /* Subtle paper grain for warm editorial feel */
  background-image:
    radial-gradient(circle at 20% 30%, rgba(184, 71, 45, 0.015) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(26, 22, 20, 0.015) 0%, transparent 40%);
  min-height: 100vh;
}

/* ============================================================
   Typography
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0;
  /* Fraunces variable axes for editorial feel */
  font-variation-settings: 'opsz' 144, 'SOFT' 30, 'WONK' 0;
}

h1 {
  font-size: var(--type-3xl);
  font-weight: var(--weight-light);
  letter-spacing: -0.035em;
}

.h-display {
  font-size: var(--type-4xl);
  font-weight: var(--weight-light);
  letter-spacing: -0.045em;
  line-height: 0.95;
  font-variation-settings: 'opsz' 144, 'SOFT' 50, 'WONK' 1;
}

h2 {
  font-size: var(--type-2xl);
  font-weight: var(--weight-medium);
  letter-spacing: -0.025em;
}

h3 {
  font-size: var(--type-xl);
  font-weight: var(--weight-medium);
}

h4 {
  font-size: var(--type-lg);
  font-weight: var(--weight-semibold);
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 var(--space-5) 0;
  max-width: var(--max-width-prose);
  font-feature-settings: 'kern', 'liga', 'onum';  /* old-style numerals for editorial feel */
}

p:last-child { margin-bottom: 0; }

.lede {
  font-size: var(--type-md);
  line-height: 1.5;
  color: var(--color-ink-soft);
  font-weight: var(--weight-regular);
  font-style: italic;
  font-family: var(--font-body);
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover { color: var(--color-accent-deep); }

em { font-style: italic; }
strong { font-weight: var(--weight-semibold); color: var(--color-ink); }

/* Editorial markers — small caps labels, eyebrow text */
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--type-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  display: inline-block;
}

.dropcap::first-letter {
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  font-size: 4.5em;
  float: left;
  line-height: 0.85;
  margin: 0.05em 0.08em 0 -0.05em;
  color: var(--color-accent);
  font-variation-settings: 'opsz' 144, 'SOFT' 80, 'WONK' 1;
}

/* ============================================================
   Layout primitives
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-wide {
  width: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-prose {
  width: 100%;
  max-width: var(--max-width-prose);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

section { padding: var(--space-9) 0; }

.rule {
  height: 1px;
  background: var(--color-rule);
  margin: var(--space-8) 0;
  border: none;
}

.rule-ornamental {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-8) 0;
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: var(--type-lg);
  letter-spacing: 0.5em;
  font-style: italic;
  font-weight: var(--weight-light);
}

.rule-ornamental::before,
.rule-ornamental::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-rule);
  margin: 0 var(--space-5);
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--type-base);
  font-weight: var(--weight-medium);
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

.btn-primary:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn-secondary:hover {
  background: var(--color-ink);
  color: var(--color-bg);
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  border-color: transparent;
  text-decoration: underline;
  text-underline-offset: 0.3em;
  padding: 0;
}

.btn-ghost:hover { color: var(--color-accent-deep); }

.btn-arrow::after {
  content: '→';
  font-family: var(--font-body);
  transition: transform var(--duration-base) var(--ease-out);
}

.btn-arrow:hover::after { transform: translateX(4px); }

/* ============================================================
   Forms
   ============================================================ */

.form-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

input[type="email"], input[type="text"] {
  flex: 1;
  min-width: 240px;
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--type-base);
  background: var(--color-bg);
  color: var(--color-ink);
  border: 1px solid var(--color-rule);
  border-radius: 0;
  transition: border-color var(--duration-fast) var(--ease-out);
}

input[type="email"]:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--color-ink);
}

input::placeholder { color: var(--color-ink-muted); font-style: italic; }

/* ============================================================
   Animation utilities
   ============================================================ */

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-up { animation: fade-up 800ms var(--ease-out) both; }
.fade-in { animation: fade-in 800ms var(--ease-out) both; }

.delay-1 { animation-delay: 100ms; }
.delay-2 { animation-delay: 200ms; }
.delay-3 { animation-delay: 350ms; }
.delay-4 { animation-delay: 500ms; }
.delay-5 { animation-delay: 700ms; }

/* ============================================================
   Responsive — mobile first refinements
   ============================================================ */

@media (max-width: 768px) {
  :root {
    --type-3xl: 2.75rem;
    --type-4xl: 3.5rem;
    --type-2xl: 2rem;
    --type-xl: 1.5rem;
    --space-9: 4rem;
    --space-10: 5rem;
  }

  .container, .container-wide, .container-prose {
    padding: 0 var(--space-5);
  }

  section { padding: var(--space-8) 0; }
}

@media (max-width: 480px) {
  :root {
    --type-3xl: 2.25rem;
    --type-4xl: 2.75rem;
  }

  .form-row { flex-direction: column; }
  input[type="email"], input[type="text"] { min-width: 0; width: 100%; }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}