:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --bg-elevated: #ffffff;
  --bg-muted: #eef2f5;
  --bg-strong: #0f1720;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --surface-muted: #f8fafb;
  --surface-dark: #101820;
  --border: rgba(15, 23, 32, 0.09);
  --border-strong: rgba(15, 23, 32, 0.15);
  --text: #121a23;
  --text-soft: #51606f;
  --text-muted: #708090;
  --text-inverse: #f5f7f9;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --accent-line: rgba(15, 118, 110, 0.22);
  --success: #15803d;
  --success-soft: rgba(21, 128, 61, 0.12);
  --warning: #b45309;
  --warning-soft: rgba(180, 83, 9, 0.12);
  --danger: #b42318;
  --danger-soft: rgba(180, 35, 24, 0.12);
  --info: #2563eb;
  --info-soft: rgba(37, 99, 235, 0.12);
  --shadow-sm: 0 8px 24px rgba(15, 23, 32, 0.06);
  --shadow-md: 0 18px 48px rgba(15, 23, 32, 0.08);
  --shadow-lg: 0 28px 72px rgba(15, 23, 32, 0.12);
  --radius-xs: 10px;
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --nav-height: 78px;
  --container: 1180px;
  --font-sans: "Manrope", "Segoe UI", sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d141a;
  --bg-elevated: #121b22;
  --bg-muted: #17222b;
  --bg-strong: #ecf2f7;
  --surface: rgba(18, 27, 34, 0.86);
  --surface-strong: #152029;
  --surface-muted: #0f1820;
  --surface-dark: #0a1117;
  --border: rgba(236, 242, 247, 0.08);
  --border-strong: rgba(236, 242, 247, 0.14);
  --text: #ecf2f7;
  --text-soft: #b2c0cb;
  --text-muted: #8d9ba6;
  --text-inverse: #0d141a;
  --accent: #43b3ab;
  --accent-strong: #5dc4bc;
  --accent-soft: rgba(67, 179, 171, 0.16);
  --accent-line: rgba(67, 179, 171, 0.28);
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.12);
  --warning: #f59e0b;
  --warning-soft: rgba(245, 158, 11, 0.12);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.12);
  --info: #60a5fa;
  --info-soft: rgba(96, 165, 250, 0.12);
  --shadow-sm: 0 12px 28px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 18px 48px rgba(0, 0, 0, 0.34);
  --shadow-lg: 0 28px 72px rgba(0, 0, 0, 0.42);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.09), transparent 28%),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.06), transparent 26%),
    var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

img {
  max-width: 100%;
}

.site-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container-wide {
  width: min(100% - 2rem, var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: inline-block;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 1rem;
}

.nav-link {
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 700;
  transition: background 0.18s ease, color 0.18s ease;
}

.nav-link:hover,
.nav-link.active {
  background: var(--surface-strong);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.site-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.42rem 0.9rem 0.42rem 0.5rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.user-chip-avatar {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.8rem;
  font-weight: 800;
}

.user-chip-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
}

.user-chip-img {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  object-fit: cover;
}

/* Sender avatar on dashboard cards */
.card-sender {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.card-sender-avatar {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.card-sender-img {
  object-fit: cover;
}

.icon-button,
.menu-button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-strong);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.icon-button:hover,
.menu-button:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.menu-button {
  display: none;
}

.nav-divider {
  height: 1px;
  background: var(--border);
  margin: 0.4rem 0.9rem;
}

.nav-mobile-only {
  display: none;
}

.nav-desktop-only {
  display: inline-flex;
}

a.nav-desktop-only {
  display: inline-block;
}

.nav-cta {
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border-radius: 12px;
  text-align: center;
}

.site-main {
  flex: 1;
  padding: 3rem 0 5rem;
}

.page-stack {
  display: grid;
  gap: 1.5rem;
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-title {
  margin: 0.7rem 0 0.55rem;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
  font-weight: 800;
}

.page-subtitle {
  margin: 0;
  max-width: 680px;
  color: var(--text-soft);
  font-size: 1.02rem;
  line-height: 1.75;
}

.hero-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: stretch;
}

.hero-card,
.panel,
.metric-card,
.auth-card,
.preview-shell,
.empty-state,
.timeline-card,
.feature-card,
.notice,
.error-card,
.debug-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero-card,
.panel,
.auth-card,
.preview-shell,
.error-card,
.debug-card {
  padding: 1.5rem;
}

.hero-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
}

.hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 2rem;
}

.proof-item {
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
  border: 1px solid var(--border);
}

.proof-value {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.proof-label {
  margin-top: 0.35rem;
  color: var(--text-soft);
  font-size: 0.84rem;
}

.capsule-preview {
  display: grid;
  gap: 1rem;
}

.capsule-preview-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.72rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.label.accent {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.label.success {
  color: var(--success);
  background: var(--success-soft);
}

.label.warning {
  color: var(--warning);
  background: var(--warning-soft);
}

.label.danger {
  color: var(--danger);
  background: var(--danger-soft);
}

.label.info {
  color: var(--info);
  background: var(--info-soft);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.2rem;
}

.panel-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.panel-subtitle {
  margin: 0.2rem 0 0;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.panel-muted {
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface-muted);
  border: 1px solid var(--border);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.metric-card {
  padding: 1.15rem 1.2rem;
}

.metric-label {
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.metric-value {
  margin-top: 0.6rem;
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.05em;
  font-weight: 800;
}

.metric-trend {
  margin-top: 0.7rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.section-grid {
  display: grid;
  gap: 1rem;
}

.message-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.message-card {
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.15rem;
  display: grid;
  gap: 1rem;
}

.message-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.message-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.message-meta,
.muted-copy {
  color: var(--text-soft);
  font-size: 0.86rem;
  line-height: 1.65;
}

.message-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.empty-state {
  padding: 2rem;
  text-align: center;
  color: var(--text-soft);
}

.empty-state i {
  display: inline-flex;
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.step-grid,
.feature-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.timeline-card,
.feature-card {
  padding: 1.35rem;
}

.timeline-step {
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-title,
.feature-title {
  margin: 0.9rem 0 0.45rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.timeline-copy,
.feature-copy,
.list-copy li {
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.7;
}

.list-copy {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.list-copy li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}

.list-copy i {
  margin-top: 0.25rem;
  color: var(--accent);
}

.cta-strip {
  padding: 1.6rem;
  border-radius: var(--radius-lg);
  background: var(--bg-strong);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.cta-strip p {
  margin: 0.45rem 0 0;
  color: color-mix(in srgb, var(--text-inverse) 74%, transparent);
}

.btn {
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 800;
  letter-spacing: -0.01em;
  padding: 0.82rem 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--bg-strong);
  border-color: var(--bg-strong);
  color: var(--text-inverse);
}

.btn-primary:hover {
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-secondary,
.btn-ghost {
  background: var(--surface-strong);
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover,
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-outline-success {
  border-color: color-mix(in srgb, var(--success) 30%, var(--border));
  background: var(--success-soft);
  color: var(--success);
}

.btn-outline-warning {
  border-color: color-mix(in srgb, var(--warning) 30%, var(--border));
  background: var(--warning-soft);
  color: var(--warning);
}

.btn-outline-danger {
  border-color: color-mix(in srgb, var(--danger) 30%, var(--border));
  background: var(--danger-soft);
  color: var(--danger);
}

.btn-outline-info,
.btn-outline-secondary {
  border-color: var(--border);
  background: var(--surface-muted);
  color: var(--text-soft);
}

.btn-outline-info:hover,
.btn-outline-secondary:hover {
  color: var(--text);
}

.btn-sm {
  padding: 0.65rem 0.9rem;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 0.95rem 1.25rem;
}

.form-label {
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.form-control,
.form-select,
.input-group-text {
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  min-height: 52px;
}

.form-control,
.form-select {
  padding: 0.82rem 0.95rem;
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--accent-line);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
  background: var(--surface-strong);
  color: var(--text);
}

.input-group-text {
  display: inline-flex;
  align-items: center;
  padding: 0 0.95rem;
  color: var(--text-muted);
}

.form-text {
  color: var(--text-muted);
  font-size: 0.81rem;
  margin-top: 0.45rem;
  line-height: 1.6;
}

textarea.form-control {
  min-height: 160px;
}

.notice-stack {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.notice {
  padding: 1rem 1.1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.notice.success {
  border-color: color-mix(in srgb, var(--success) 20%, var(--border));
}

.notice.warning {
  border-color: color-mix(in srgb, var(--warning) 20%, var(--border));
}

.notice.danger {
  border-color: color-mix(in srgb, var(--danger) 20%, var(--border));
}

.notice.info {
  border-color: color-mix(in srgb, var(--info) 20%, var(--border));
}

.notice-icon {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-muted);
}

.notice.success .notice-icon {
  color: var(--success);
}

.notice.warning .notice-icon {
  color: var(--warning);
}

.notice.danger .notice-icon {
  color: var(--danger);
}

.notice.info .notice-icon {
  color: var(--info);
}

.notice-copy {
  flex: 1;
  color: var(--text-soft);
  font-size: 0.9rem;
  line-height: 1.6;
}

.notice-close {
  width: 32px;
  height: 32px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  border-radius: 10px;
}

.auth-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 1.25rem;
  align-items: stretch;
}

.auth-aside {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--bg-strong);
  color: var(--text-inverse);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
  box-shadow: var(--shadow-lg);
}

.auth-aside p,
.auth-aside li {
  color: color-mix(in srgb, var(--text-inverse) 76%, transparent);
}

.auth-card {
  padding: 2rem;
}

.auth-title {
  margin: 0 0 0.45rem;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.auth-subtitle {
  margin: 0 0 1.75rem;
  color: var(--text-soft);
  line-height: 1.7;
}

.auth-footer {
  margin-top: 1.3rem;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.auth-footer a {
  color: var(--text);
  font-weight: 800;
}

.strength-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.35rem;
  margin-top: 0.65rem;
}

.strength-segment {
  height: 6px;
  border-radius: 999px;
  background: var(--bg-muted);
  transition: background 0.2s ease;
}

.strength-copy,
.match-copy {
  margin-top: 0.45rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.requirements {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.requirements li {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.requirements li.met {
  color: var(--success);
}

.detail-list {
  display: grid;
  gap: 0.9rem;
}

.detail-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.detail-label {
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.detail-value {
  text-align: right;
  color: var(--text);
  font-weight: 700;
}

.badge-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.countdown-inline {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.countdown-block {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 0.8rem;
  border-radius: 14px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  font-weight: 800;
}

.message-body {
  padding: 1.2rem;
  border-radius: 18px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  line-height: 1.85;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.secure-callout {
  padding: 1rem 1.1rem;
  border-radius: 16px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
}

.activity-list {
  display: grid;
  gap: 1rem;
}

.activity-row {
  display: grid;
  gap: 0.45rem;
}

.activity-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--text-soft);
}

.activity-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--bg-muted);
  overflow: hidden;
}

.activity-bar > span {
  display: block;
  height: 100%;
  border-radius: 999px;
}

.error-shell {
  max-width: 760px;
  margin: 0 auto;
}

.error-card {
  padding: 2.5rem;
}

.error-code {
  margin: 0;
  font-size: clamp(4rem, 16vw, 7rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
  font-weight: 800;
}

.error-title {
  margin: 0.85rem 0 0.55rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.error-copy {
  max-width: 520px;
  color: var(--text-soft);
  line-height: 1.8;
}

.debug-grid {
  display: grid;
  gap: 1rem;
}

.debug-card {
  padding: 1.4rem;
}

.data-table-wrap {
  overflow-x: auto;
  border-radius: 18px;
  border: 1px solid var(--border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 840px;
}

.data-table th,
.data-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background: var(--surface-muted);
  color: var(--text-soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr.flagged {
  background: color-mix(in srgb, var(--danger) 10%, transparent);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.2rem 0 1.8rem;
}

.site-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--text-soft);
  font-size: 0.85rem;
}

.footer-meta {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.footer-meta span {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}

.loading-screen {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease, visibility 0.18s ease;
}

.loading-screen.visible {
  opacity: 1;
  visibility: visible;
}

.loading-indicator {
  width: 54px;
  height: 54px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.loading-indicator::after {
  content: "";
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 3px solid color-mix(in srgb, var(--accent) 16%, transparent);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}

.toast-stack {
  position: fixed;
  top: calc(var(--nav-height) + 14px);
  right: 16px;
  z-index: 1500;
  display: grid;
  gap: 0.75rem;
}

.toast-card {
  min-width: 280px;
  max-width: 360px;
  padding: 0.95rem 1rem;
  border-radius: 18px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.toast-card.success {
  border-color: color-mix(in srgb, var(--success) 30%, var(--border));
}

.toast-card.warning {
  border-color: color-mix(in srgb, var(--warning) 30%, var(--border));
}

.toast-card.danger {
  border-color: color-mix(in srgb, var(--danger) 30%, var(--border));
}

.toast-card.info {
  border-color: color-mix(in srgb, var(--info) 30%, var(--border));
}

.toast-icon {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-muted);
}

.toast-copy {
  color: var(--text-soft);
  font-size: 0.88rem;
  line-height: 1.55;
}

.toast-close {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 9px;
  margin-left: auto;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-muted);
  font-size: 0.84rem;
}

.breadcrumb-nav a {
  color: var(--text-soft);
  font-weight: 700;
}

.breadcrumb-nav span:last-child {
  color: var(--text);
}

.utility-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.mono {
  font-family: "Consolas", "SFMono-Regular", monospace;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .auth-shell {
    grid-template-columns: 1fr;
  }

  .metrics-grid,
  .hero-proof,
  .step-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .menu-button {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.75rem);
    padding: 0.9rem;
    border-radius: 20px;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .site-actions {
    gap: 0.5rem;
  }

  /* hide desktop-only nav items on mobile */
  .nav-desktop-only,
  a.nav-desktop-only {
    display: none !important;
  }

  /* show mobile-only nav items inside the dropdown */
  .nav-mobile-only {
    display: flex;
  }

  .nav-divider.nav-mobile-only {
    display: block;
  }

  .nav-cta {
    padding: 0.8rem 0.9rem;
  }


  .page-title {
    font-size: clamp(1.8rem, 11vw, 2.7rem);
  }

  .cta-strip,
  .site-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 400px) {
  .brand-text {
    display: none;
  }
}

@media (max-width: 640px) {
  .site-main {
    padding-top: 2rem;
    padding-bottom: 3rem;
  }

  .hero-card,
  .panel,
  .auth-card,
  .preview-shell,
  .timeline-card,
  .feature-card,
  .error-card,
  .debug-card {
    padding: 1.15rem;
  }

  .metrics-grid,
  .hero-proof,
  .step-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .proof-item,
  .metric-card,
  .message-card {
    padding: 1rem;
  }

  .toast-stack {
    left: 12px;
    right: 12px;
  }

  .toast-card {
    min-width: 0;
    max-width: none;
  }
}