/* =============================================================
   APERTURE OPENINGS — Customer Specification Form
   Brand-aligned per Identity Guidelines 2026
   ============================================================= */

:root {
  /* Brand palette */
  --aperture-green: #1B3A2D;
  --forest:         #2D5E48;
  --sage:           #4A8068;
  --bronze:         #B08D6E;
  --pale-sage:      #D4E8DE;
  --warm-white:     #FAF8F5;
  --charcoal:       #2A2A2A;
  --stone:          #E8E6E3;

  /* Functional tokens */
  --bg:           var(--warm-white);
  --surface:      #FFFFFF;
  --ink:          var(--charcoal);
  --ink-soft:     #4A4A47;
  --ink-mute:     #7A7A75;
  --line:         var(--stone);
  --line-strong:  #D6D2CB;
  --accent:       var(--aperture-green);
  --accent-soft:  var(--pale-sage);
  --bronze-soft:  #E8DBCB;
  --warn:         #A8503D;

  --radius:    4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(27,58,45,0.04);
  --shadow-md: 0 4px 20px rgba(27,58,45,0.06);

  --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ====================== HEADER ====================== */
.site-header {
  background: var(--aperture-green);
  border-bottom: 1px solid var(--aperture-green);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 24px 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.brand-logo {
  display: block;
  height: auto;
  width: 140px;
  /* Minimum 120px width per brand kit usage guidelines */
}

/* ====================== HERO ====================== */
.hero {
  padding: 72px 0 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}
.eyebrow {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--bronze);
  margin: 0 0 18px;
  position: relative;
  padding-left: 36px;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 26px;
  height: 1px;
  background: var(--bronze);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 500;
  margin: 0 0 16px;
  letter-spacing: -0.015em;
  color: var(--aperture-green);
  line-height: 1.15;
}
.lede {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0;
  line-height: 1.6;
}

/* ====================== FORM SECTIONS ====================== */
form { padding-bottom: 80px; }

.section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.section legend {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 0;
  margin-bottom: 6px;
  width: 100%;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
  margin-bottom: 8px;
}
.legend-number {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--bronze);
  letter-spacing: 0.16em;
  padding-top: 6px;
}
.legend-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  color: var(--aperture-green);
  letter-spacing: -0.005em;
}
.section-help {
  font-size: 13.5px;
  color: var(--ink-mute);
  margin: 18px 0 4px;
}
.section-help strong {
  color: var(--ink-soft);
  font-weight: 500;
}

/* ====================== FIELDS ====================== */
.grid {
  display: grid;
  gap: 20px 22px;
  margin-top: 24px;
}
.grid.two { grid-template-columns: 1fr 1fr; }

.field { display: flex; flex-direction: column; }
.field.full { grid-column: 1 / -1; }

.field-label {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-soft);
  margin-bottom: 7px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.req { color: var(--bronze); margin-left: 2px; }

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 11px 13px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  width: 100%;
}
textarea {
  resize: vertical;
  min-height: 70px;
  font-family: var(--font-body);
  line-height: 1.55;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--aperture-green);
  box-shadow: 0 0 0 3px rgba(27, 58, 45, 0.10);
}

input::placeholder, textarea::placeholder {
  color: #B5B0A8;
}

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%231B3A2D' d='M6 8L0 0h12z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 10px;
  padding-right: 36px;
  cursor: pointer;
}

optgroup {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--aperture-green);
  font-style: normal;
}

/* ====================== RADIO / CHECKBOX GROUPS ====================== */
.inline-group {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 16px 18px 12px;
  background: var(--warm-white);
}
.inline-group legend {
  display: inline;
  width: auto;
  border: none;
  padding: 0 8px;
  margin: 0;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--surface);
}
.inline-group .radio,
.inline-group .check {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 6px 20px 6px 0;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  font-family: var(--font-body);
}
.inline-group input[type="radio"],
.inline-group input[type="checkbox"] {
  accent-color: var(--aperture-green);
  width: 15px;
  height: 15px;
  cursor: pointer;
  margin: 0;
}

/* ====================== ITEM CARDS ====================== */
.items {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 22px;
}

.item-card {
  background: var(--pale-sage);
  border: 1px solid #BDD5C7;
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
}
.item-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 28px;
  right: 28px;
  height: 2px;
  background: var(--bronze);
  border-radius: 0 0 1px 1px;
}
.item-card .inline-group {
  background: var(--warm-white);
}
.item-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid #BDD5C7;
}
.item-card-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  margin: 0;
  color: var(--aperture-green);
  letter-spacing: -0.005em;
}
.remove-btn {
  background: transparent;
  border: 1px solid #BDD5C7;
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.18s;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.remove-btn:hover {
  border-color: var(--warn);
  color: var(--warn);
  background: var(--warm-white);
}
.item-card:first-child .remove-btn { display: none; }

/* ====================== BUTTONS ====================== */
.btn {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  padding: 13px 28px;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s;
  letter-spacing: 0.04em;
}
.btn-primary {
  background: var(--aperture-green);
  color: var(--warm-white);
  border-color: var(--aperture-green);
}
.btn-primary:hover {
  background: var(--forest);
  border-color: var(--forest);
}
.btn-secondary {
  background: transparent;
  color: var(--aperture-green);
  border-color: var(--aperture-green);
}
.btn-secondary:hover {
  background: var(--aperture-green);
  color: var(--warm-white);
}
.btn-ghost {
  background: transparent;
  color: var(--bronze);
  border-color: var(--bronze);
}
.btn-ghost:hover {
  background: var(--bronze-soft);
  color: var(--aperture-green);
}

.form-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 36px;
  flex-wrap: wrap;
}
.privacy {
  font-size: 12px;
  color: var(--ink-mute);
  margin-top: 18px;
  font-style: italic;
}

/* ====================== FOOTER ====================== */
.site-footer {
  background: var(--aperture-green);
  color: var(--warm-white);
  padding: 36px 0 28px;
  margin-top: 40px;
}
.footer-inner {
  text-align: center;
}
.footer-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  color: var(--bronze);
  margin: 0 0 12px;
  font-weight: 400;
}
.footer-meta {
  margin: 0;
  font-size: 12px;
  color: rgba(250, 248, 245, 0.7);
  letter-spacing: 0.04em;
}

/* ====================== SUCCESS / ERROR BANNERS ====================== */
.success-banner {
  background: var(--pale-sage);
  border: 1px solid var(--sage);
  border-left: 4px solid var(--aperture-green);
  color: var(--aperture-green);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-weight: 500;
  font-size: 14.5px;
}
.error-banner {
  background: #fdecea;
  border: 1px solid #f5c6cb;
  border-left: 4px solid #c0392b;
  color: #962020;
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-weight: 500;
  font-size: 14.5px;
}

/* ====================== SERIES HINT ====================== */
.series-hint {
  background: var(--pale-sage);
  border: 1px dashed var(--sage);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-top: 4px;
}
.series-hint .hint-text {
  margin: 0;
  font-size: 14px;
  color: var(--aperture-green);
  font-style: italic;
}

/* ====================== RESPONSIVE ====================== */
@media (max-width: 720px) {
  .hero { padding: 48px 0 28px; }
  .hero h1 { font-size: 28px; }
  .lede { font-size: 15px; }
  .section { padding: 22px 18px; }
  .legend-title { font-size: 19px; }
  .grid.two { grid-template-columns: 1fr; }
  .item-card { padding: 20px 18px; }
  .item-card::before { left: 20px; right: 20px; }
  .form-actions { flex-direction: column; align-items: stretch; }
  .form-actions .btn { width: 100%; }
}