:root {
  --bg: #f7f1e5;
  --bg-2: #efe1c8;
  --surface: rgba(255, 250, 242, 0.86);
  --surface-strong: rgba(255, 251, 246, 0.97);
  --surface-soft: rgba(244, 231, 208, 0.68);
  --text: #23180f;
  --muted: #6f5a46;
  --line: rgba(56, 37, 20, 0.18);
  --line-strong: rgba(56, 37, 20, 0.28);
  --highlight: rgba(255, 255, 255, 0.72);
  --shadow:
    0 30px 90px rgba(88, 58, 31, 0.14),
    0 10px 26px rgba(88, 58, 31, 0.08);
  --accent: rgba(214, 170, 106, 0.34);
  --accent-strong: #a88351;
  --button-bg: linear-gradient(180deg, #3a2818 0%, #25170d 100%);
  --button-text: #f8f1e7;
  --input-bg: rgba(255, 255, 255, 0.8);
  --viewer-bg:
    radial-gradient(circle at 50% 28%, rgba(255, 255, 255, 0.92), rgba(232, 211, 181, 0.48)),
    linear-gradient(180deg, #fff8ef 0%, #ead6b7 100%);
  --grid-line: rgba(56, 37, 20, 0.03);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-sm: 12px;
}

:root[data-theme="dark"] {
  --bg: #17110d;
  --bg-2: #291e18;
  --surface: rgba(28, 20, 16, 0.85);
  --surface-strong: rgba(24, 18, 15, 0.96);
  --surface-soft: rgba(77, 58, 40, 0.26);
  --text: #f5e9d7;
  --muted: #d0bca3;
  --line: rgba(245, 233, 215, 0.14);
  --line-strong: rgba(245, 233, 215, 0.24);
  --highlight: rgba(255, 244, 224, 0.08);
  --shadow:
    0 30px 90px rgba(0, 0, 0, 0.42),
    0 10px 26px rgba(0, 0, 0, 0.2);
  --accent: rgba(176, 132, 76, 0.25);
  --accent-strong: #dfb177;
  --button-bg: linear-gradient(180deg, #f1dfc8 0%, #ddc09b 100%);
  --button-text: #21160f;
  --input-bg: rgba(41, 30, 24, 0.92);
  --viewer-bg:
    radial-gradient(circle at 50% 22%, rgba(117, 88, 56, 0.58), rgba(31, 20, 15, 0.96)),
    linear-gradient(180deg, #2b2018 0%, #110c09 100%);
  --grid-line: rgba(245, 233, 215, 0.03);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, var(--accent), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  transition: background 180ms ease, color 180ms ease;
}

html[data-theme="dark"] body {
  background:
    radial-gradient(circle at top, var(--accent), transparent 28%),
    linear-gradient(180deg, #1b140f 0%, var(--bg) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 95%);
}

.page-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 12%, rgba(255, 255, 255, 0.12), transparent 30%),
    radial-gradient(circle at 50% 100%, rgba(0, 0, 0, 0.08), transparent 44%);
  mix-blend-mode: soft-light;
}

.page-shell {
  position: relative;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.1rem 0 4rem;
}

.brand-block,
.model-panel,
.contact-panel {
  position: relative;
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand-block::before,
.model-panel::before,
.contact-panel::before,
.contact-form::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: inherit;
  pointer-events: none;
}

.brand-block {
  position: sticky;
  top: 1rem;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255, 252, 247, 0.95), rgba(242, 228, 203, 0.9));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    inset 0 -1px 0 rgba(118, 88, 53, 0.12),
    var(--shadow);
}

html[data-theme="dark"] .brand-block {
  background:
    linear-gradient(180deg, rgba(43, 31, 24, 0.96), rgba(24, 17, 13, 0.94));
}

.brand-mark {
  display: inline-flex;
  flex: 1;
  align-items: center;
  justify-content: flex-start;
  padding: 0.75rem 1rem 0.75rem 1.15rem;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: auto;
  height: 82px;
  object-fit: contain;
  filter: drop-shadow(0 8px 18px rgba(53, 36, 20, 0.16));
}

.theme-toggle {
  margin-right: 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background:
    linear-gradient(180deg, var(--surface-strong) 0%, var(--surface-soft) 100%);
  color: var(--text);
  padding: 0.78rem 1.15rem;
  font: inherit;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 var(--highlight),
    0 10px 22px rgba(81, 56, 32, 0.08);
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 var(--highlight),
    0 14px 26px rgba(81, 56, 32, 0.12);
}

.theme-toggle:focus-visible {
  outline: 2px solid rgba(194, 150, 98, 0.7);
  outline-offset: 4px;
}

.model-panel,
.contact-panel {
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, var(--surface-strong) 0%, var(--surface) 100%);
}

.model-panel {
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 var(--highlight),
    inset 0 -1px 0 rgba(72, 47, 28, 0.08),
    var(--shadow);
}

.viewer-frame {
  position: relative;
  padding: 1.1rem;
}

.viewer-frame::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(94, 67, 41, 0.16);
  border-radius: calc(var(--radius-lg) + 2px);
  pointer-events: none;
  z-index: 1;
}

model-viewer {
  width: 100%;
  height: min(72vh, 780px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(98, 69, 41, 0.16);
  background: var(--viewer-bg);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.contact-panel {
  margin-top: 1.15rem;
  padding: 1rem;
  background:
    linear-gradient(180deg, rgba(246, 236, 216, 0.82) 0%, var(--surface-strong) 100%);
}

.contact-form {
  position: relative;
  display: grid;
  gap: 0.7rem;
  padding: 1.45rem;
  align-self: start;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 251, 246, 0.96) 0%, rgba(245, 233, 213, 0.92) 100%);
  box-shadow:
    inset 0 1px 0 var(--highlight),
    inset 0 -1px 0 rgba(104, 76, 46, 0.08);
}

html[data-theme="dark"] .contact-form {
  background:
    linear-gradient(180deg, rgba(39, 28, 21, 0.96) 0%, rgba(25, 18, 14, 0.94) 100%);
}

.contact-form label {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(88, 60, 35, 0.18);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  padding: 0.92rem 1rem;
  font: inherit;
  font-size: 0.98rem;
  color: var(--text);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.42),
    inset 0 -1px 0 rgba(70, 47, 27, 0.04);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease, background 160ms ease;
}

html[data-theme="dark"] .contact-form input,
html[data-theme="dark"] .contact-form textarea {
  border-color: rgba(243, 237, 225, 0.14);
  box-shadow:
    inset 0 1px 0 rgba(255, 245, 225, 0.05),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

.contact-form textarea {
  resize: vertical;
  min-height: 10rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-strong);
  background: var(--surface-strong);
  box-shadow:
    0 0 0 4px rgba(194, 150, 98, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  transform: translateY(-1px);
}

.contact-form button {
  margin-top: 0.45rem;
  border: 1px solid rgba(82, 58, 34, 0.22);
  border-radius: 999px;
  background: var(--button-bg);
  color: var(--button-text);
  padding: 1rem 1.4rem;
  font: inherit;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 12px 24px rgba(55, 34, 18, 0.14);
  transition: transform 160ms ease, opacity 160ms ease, box-shadow 160ms ease;
}

.contact-form button:hover,
.contact-form button:focus-visible {
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 16px 28px rgba(55, 34, 18, 0.18);
}

.contact-form button:focus-visible {
  outline: 2px solid rgba(194, 150, 98, 0.7);
  outline-offset: 4px;
}

.form-status {
  min-height: 1.5rem;
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 800px) {
  .page-shell {
    width: min(100% - 1rem, 1120px);
    padding-top: 0.5rem;
  }

  .brand-block {
    top: 0.5rem;
    border-radius: 20px;
  }

  .viewer-frame {
    padding: 0.8rem;
  }

  model-viewer {
    height: min(58vh, 520px);
  }

  .contact-panel {
    padding: 1rem;
  }

  .contact-form {
    padding: 1.15rem;
  }

  .brand-mark {
    min-width: 0;
    padding: 0.5rem 0.4rem 0.5rem 0.75rem;
  }

  .brand-logo {
    height: 58px;
  }

  .theme-toggle {
    margin-right: 0.45rem;
    padding: 0.7rem 0.9rem;
    letter-spacing: 0.08em;
  }
}