/* ============================================
   BOOKD DESIGN SYSTEM — shared across all pages
   ============================================ */

* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink: #0e0e14;
  --ink-mid: #3a3a4a;
  --ink-soft: #7a7a90;
  --cream: #f5f4f0;
  --accent: #2d2dff;
  --accent-soft: rgba(45,45,255,0.08);
  --border: rgba(14,14,20,0.12);
  --white: #ffffff;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--cream);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 48px;
  background: rgba(245,244,240,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav-logo .dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-left: 1px;
  vertical-align: 0px;
}

.nav-links { display: flex; gap: 32px; align-items: center; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 32px; height: 32px; background: none; border: none; cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px; background: var(--ink);
  border-radius: 2px; transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-links a {
  font-size: 14px; font-weight: 500; letter-spacing: 0.02em;
  text-transform: uppercase; color: var(--ink-mid);
  text-decoration: none; transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active { color: var(--accent); }

.nav-cta {
  background: var(--ink) !important; color: var(--white) !important;
  padding: 10px 22px; border-radius: 4px !important;
  text-transform: none !important; letter-spacing: 0 !important;
  font-size: 15px !important;
}

/* PAGE HEADER (for non-home pages) */
.page-header {
  padding: 160px 48px 80px;
  background: var(--ink);
  position: relative; overflow: hidden;
}

.page-header-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
}

.page-header-content { position: relative; max-width: 760px; }

.page-eyebrow {
  font-size: 12px; font-weight: 500; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 20px;
}

.page-header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(40px, 5.5vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 20px;
}

.page-header p {
  font-size: 18px; font-weight: 300; color: rgba(255,255,255,0.6);
  max-width: 540px; line-height: 1.6;
}

/* SECTIONS */
section { padding: 100px 48px; }

.section-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 20px;
}

h2 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(32px, 3.6vw, 50px);
  line-height: 1.1; letter-spacing: -0.025em;
  color: var(--ink); margin-bottom: 20px;
}

h2 em { font-style: italic; color: var(--ink-soft); }

.lead {
  font-size: 18px; font-weight: 300; color: var(--ink-mid);
  max-width: 580px; line-height: 1.65; margin-bottom: 48px;
}

/* BUTTONS */
.btn-primary {
  display: inline-block;
  background: var(--ink); color: var(--white);
  padding: 16px 32px; border-radius: 4px;
  font-size: 15px; font-weight: 500;
  text-decoration: none; letter-spacing: 0.01em;
  transition: background 0.2s, transform 0.15s;
  border: none; cursor: pointer;
}

.btn-primary:hover { background: #2a2a3a; transform: translateY(-1px); }

.btn-primary.on-dark { background: var(--white); color: var(--ink); }
.btn-primary.on-dark:hover { background: #e8e7e0; }

.btn-ghost {
  display: inline-block;
  background: transparent; color: var(--ink-mid);
  padding: 16px 32px; border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 15px; font-weight: 400;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

.btn-ghost.on-dark { color: rgba(255,255,255,0.7); border-color: rgba(255,255,255,0.2); }
.btn-ghost.on-dark:hover { border-color: rgba(255,255,255,0.5); color: var(--white); }

/* FORMS */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--ink-mid); margin-bottom: 8px;
  letter-spacing: 0.01em;
}

.form-input, .form-textarea, .form-select {
  width: 100%; padding: 14px 16px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: 4px; font-family: 'DM Sans', sans-serif;
  font-size: 15px; color: var(--ink);
  transition: border-color 0.2s;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; border-color: var(--accent);
}

.form-textarea { resize: vertical; min-height: 120px; }

.form-submit {
  background: var(--ink); color: var(--white);
  padding: 16px 36px; border-radius: 4px; border: none;
  font-size: 15px; font-weight: 500; cursor: pointer;
  transition: background 0.2s; font-family: 'DM Sans', sans-serif;
}

.form-submit:hover { background: #2a2a3a; }

.form-note {
  font-size: 13px; color: var(--ink-soft); margin-top: 12px;
}

/* FORM VALIDATION */
.form-input.field-invalid, .form-select.field-invalid, .form-textarea.field-invalid {
  border-color: #c0392b; background: #fdf1ef;
}
.checkbox-grid.field-invalid {
  outline: 1px solid #c0392b; outline-offset: 4px; border-radius: 4px;
}
.recorder-box.field-invalid, .file-drop.field-invalid {
  border-color: #c0392b !important; background: #fdf1ef;
}
.field-error-msg {
  display: none; font-size: 12px; color: #a8362b; margin-top: 6px;
}
.field-error-msg.show { display: block; }
.form-validation-summary {
  display: none; background: #fdf1ef; border: 1px solid #f3c6bd;
  border-radius: 4px; padding: 16px 18px; margin-bottom: 20px;
}
.form-validation-summary.show { display: block; }
.form-validation-summary p {
  margin: 0 0 8px; font-size: 14px; font-weight: 500; color: #a8362b;
}
.form-validation-summary ul { margin: 0; padding-left: 20px; }
.form-validation-summary li { font-size: 13px; color: #a8362b; margin-bottom: 4px; }

/* FOOTER */
footer {
  background: var(--ink);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 56px 48px 40px;
}

.footer-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  flex-wrap: wrap; gap: 40px; margin-bottom: 40px;
}

.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 22px; color: var(--white);
  text-decoration: none;
}

.footer-logo .dot {
  display: inline-block; width: 5px; height: 5px;
  background: var(--accent); border-radius: 50%;
  margin-left: 1px; vertical-align: 0px;
}

.footer-tagline {
  font-size: 14px; color: rgba(255,255,255,0.4); margin-top: 8px;
}

.footer-links { display: flex; gap: 48px; flex-wrap: wrap; }

.footer-col h3 {
  font-size: 12px; font-weight: 500; letter-spacing: 0.1em;
  text-transform: uppercase; color: rgba(255,255,255,0.35);
  margin-bottom: 16px;
}

.footer-col a {
  display: block; font-size: 14px; color: rgba(255,255,255,0.6);
  text-decoration: none; margin-bottom: 10px; transition: color 0.2s;
}

.footer-col a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}

.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.25); }

/* CARDS - shared */
.card-grid {
  display: grid; gap: 2px;
}

.card {
  padding: 40px;
  background: var(--white);
  border: 1px solid var(--border);
}

.card-dark {
  background: var(--ink);
  border-color: var(--ink);
}

/* ANIMATIONS */
.fade-up {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 768px) {
  nav { padding: 16px 24px; flex-wrap: wrap; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none; width: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    margin-top: 16px; padding-top: 12px;
    border-top: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 14px 4px; border-bottom: 1px solid var(--border);
    text-transform: none; font-size: 15px;
  }
  .nav-links a:last-child { border-bottom: none; }
  .nav-cta { text-align: center; margin-top: 8px; }
  section { padding: 64px 24px; }
  .page-header { padding: 120px 24px 56px; }
  .footer-top { flex-direction: column; }
  h2 { font-size: 32px; }
}