/* WebcamTest design system — modern, layered cards, light surfaces, no gradients */

:root {
  --color-bg: #f4f5f9;
  --color-bg-soft: #fafbfd;
  --color-surface: #ffffff;
  --color-surface-tinted: #f7f8fb;
  --color-border: rgba(15, 23, 42, 0.06);
  --color-border-strong: rgba(15, 23, 42, 0.10);
  --color-divider: #eef0f4;

  --color-text: #0f172a;
  --color-text-strong: #020617;
  --color-text-soft: #475569;
  --color-text-muted: #64748b;

  --color-primary: #4f46e5;
  --color-primary-strong: #4338ca;
  --color-primary-soft: #eef2ff;
  --color-primary-tint: rgba(79, 70, 229, 0.08);

  --color-success: #16a34a;
  --color-success-soft: #ecfdf5;
  --color-danger: #dc2626;
  --color-danger-soft: #fef2f2;
  --color-warning: #b45309;
  --color-warning-soft: #fffbeb;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 20px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 1px 2px rgba(15, 23, 42, 0.04), 0 16px 36px rgba(15, 23, 42, 0.08);
  --shadow-card-hover: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 32px rgba(15, 23, 42, 0.10);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* legacy aliases for any inline styles that still reference these */
  --primary-color: var(--color-primary);
  --secondary-color: var(--color-primary);
  --success-color: var(--color-success);
  --danger-color: var(--color-danger);
  --warning-color: var(--color-warning);
  --light-bg: var(--color-bg);
  --border-color: var(--color-border);
  --text-dark: var(--color-text);
  --text-muted: var(--color-text-muted);
  --dark-bg: #0b1120;
}

/* ================================================================
   Base
   ================================================================ */
body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-strong);
  letter-spacing: -0.015em;
}

h1, .display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
  font-weight: 700;
  letter-spacing: -0.025em;
}

p {
  color: var(--color-text-soft);
  line-height: 1.65;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-strong); }

.text-muted { color: var(--color-text-muted) !important; }
.text-primary { color: var(--color-primary) !important; }
.text-dark { color: var(--color-text-strong) !important; }

/* ================================================================
   Navigation
   ================================================================ */
.site-nav {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
}

.site-nav .navbar-brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.015em;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.site-nav .brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background-color: var(--color-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.28), inset 0 1px 0 rgba(255,255,255,0.18);
}

.site-nav .nav-link {
  color: var(--color-text-soft) !important;
  font-weight: 500;
  font-size: 0.94rem;
  padding: 0.45rem 0.85rem !important;
  border-radius: 8px;
  transition: color .15s, background-color .15s;
}

.site-nav .nav-link:hover {
  color: var(--color-text) !important;
  background-color: var(--color-bg);
}

.site-nav .nav-link.active,
.site-nav .nav-link.dropdown-toggle.active {
  color: var(--color-primary) !important;
  background-color: var(--color-primary-soft);
}

.site-nav .navbar-toggler {
  border: 1px solid var(--color-border-strong);
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
}

.site-nav .navbar-toggler:focus {
  box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.site-nav .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,23,42,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.dropdown-menu {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.4rem;
  min-width: 240px;
  box-shadow: var(--shadow-md);
  background-color: var(--color-surface);
  margin-top: 0.5rem;
}

.dropdown-item {
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--color-text-soft);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: background-color .12s, color .12s;
}

.dropdown-item i { color: var(--color-primary); font-size: 1rem; }

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
}

.dropdown-item.active,
.dropdown-item:active {
  background-color: var(--color-primary);
  color: #fff;
}

.dropdown-item.active i,
.dropdown-item:active i { color: #fff; }

@media (max-width: 991.98px) {
  .navbar-collapse {
    padding-top: 0.5rem;
    margin-top: 0.5rem;
    border-top: 1px solid var(--color-border);
  }
  .dropdown-menu {
    box-shadow: none;
    border: none;
    background-color: var(--color-surface-tinted);
    margin: 0.25rem 0 0.5rem 0.4rem;
  }
}

/* ================================================================
   Hero
   ================================================================ */
.hero {
  padding: 1.25rem 0 1rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-soft);
  margin-bottom: 1.1rem;
  box-shadow: var(--shadow-xs);
}

.hero-eyebrow i { color: var(--color-primary); }

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--color-text-strong);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.hero p.lead {
  color: var(--color-text-soft);
  font-size: 1.05rem;
  max-width: 1040px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ================================================================
   Sections
   ================================================================ */
section {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

section.bg-white {
  background-color: var(--color-surface) !important;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

section.bg-light {
  background-color: var(--color-bg-soft) !important;
}

.section-header {
  color: var(--color-text-strong);
  font-weight: 700;
  margin-bottom: 1rem;
  text-align: center;
  font-size: clamp(1.5rem, 2.4vw, 1.85rem);
  letter-spacing: -0.02em;
}

.section-header i {
  color: var(--color-primary);
  margin-right: 0.55rem;
}

/* ================================================================
   Camera section
   ================================================================ */
.camera-section,
.fps-section,
.tool-section,
.mirror-section,
.photo-section,
.resolution-section,
.main-section {
  padding: 1.25rem 0 3rem;
}

.camera-container,
.fps-container,
.tool-container,
.mirror-container,
.photo-container,
.resolution-container,
.webcam-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

@media (min-width: 992px) {
  .camera-container,
  .fps-container,
  .tool-container,
  .mirror-container,
  .photo-container,
  .resolution-container,
  .webcam-container { padding: 2.75rem; }
}

#video-preview,
#fps-video,
#tool-video,
#mirror-video,
#photo-video,
#resolution-video {
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  min-height: 420px;
  border-radius: var(--radius-lg);
  background-color: #0b1120;
  box-shadow: 0 1px 0 rgba(15,23,42,.06), 0 18px 40px rgba(15, 23, 42, 0.20);
}

@media (min-width: 992px) {
  #video-preview,
  #fps-video,
  #tool-video,
  #mirror-video,
  #photo-video,
  #resolution-video { min-height: 560px; }
}

.camera-controls {
  margin-top: 1.25rem;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* ================================================================
   Buttons
   ================================================================ */
.btn-primary-custom {
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  color: #fff;
  font-weight: 600;
  padding: 0.7rem 1.5rem;
  border-radius: 10px;
  letter-spacing: -0.005em;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.18),
    0 6px 14px rgba(79, 70, 229, 0.25),
    0 1px 2px rgba(15,23,42,0.06);
  transition: transform .15s, box-shadow .15s, background-color .15s;
}

.btn-primary-custom:hover {
  background-color: var(--color-primary-strong);
  border-color: var(--color-primary-strong);
  color: #fff;
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.22),
    0 10px 22px rgba(79, 70, 229, 0.30),
    0 1px 2px rgba(15,23,42,0.08);
}

.btn-primary-custom:active {
  transform: translateY(0);
}

.btn-outline-primary-custom {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
  font-weight: 500;
  padding: 0.55rem 1.15rem;
  border-radius: 10px;
  box-shadow: var(--shadow-xs);
  transition: background-color .15s, border-color .15s, color .15s, transform .15s;
}

.btn-outline-primary-custom:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-strong);
  transform: translateY(-1px);
}

/* ================================================================
   Status indicator pill
   ================================================================ */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
}

.status-inactive { color: var(--color-text-muted); background-color: var(--color-surface-tinted); }
.status-ready    { color: var(--color-success); background-color: var(--color-success-soft); border-color: rgba(22, 163, 74, 0.2); }
.status-recording{ color: var(--color-danger);  background-color: var(--color-danger-soft);  border-color: rgba(220, 38, 38, 0.2); }
.status-testing  { color: var(--color-warning); background-color: var(--color-warning-soft); border-color: rgba(180, 83, 9, 0.2); }
.status-error    { color: var(--color-danger);  background-color: var(--color-danger-soft);  border-color: rgba(220, 38, 38, 0.2); }
.status-success  { color: var(--color-success); background-color: var(--color-success-soft); border-color: rgba(22, 163, 74, 0.2); }

.recording-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-danger);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%   { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.6); }
  70%  { transform: scale(1);    box-shadow: 0 0 0 8px rgba(220, 38, 38, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
}

/* ================================================================
   Info panel
   ================================================================ */
.info-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.info-panel-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 0.85rem;
  letter-spacing: -0.005em;
}

.info-panel-title i {
  color: var(--color-primary);
  font-size: 1.05rem;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-divider);
  font-size: 0.92rem;
}

.info-row:last-child { border-bottom: none; padding-bottom: 0; }

.info-label {
  font-weight: 500;
  color: var(--color-text-soft);
}

.info-value {
  color: var(--color-text);
  font-weight: 600;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.quality-excellent { color: var(--color-success); }
.quality-verygood  { color: var(--color-primary); }
.quality-good      { color: #7c3aed; }
.quality-fair      { color: #d97706; }
.quality-poor      { color: var(--color-danger); }
.quality-unknown   { color: var(--color-text-muted); }

/* ================================================================
   Testimonials
   ================================================================ */
.testimonial {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-divider);
}
.testimonial:last-child { border-bottom: none; padding-bottom: 0; }
.testimonial p {
  font-size: 0.92rem;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}
.testimonial small { color: var(--color-text-muted); }

/* ================================================================
   Feature cards
   ================================================================ */
.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-border-strong);
}

.feature-icon-square {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-xs), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.feature-numeric {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.85rem;
  box-shadow: 0 6px 14px rgba(79, 70, 229, 0.25), inset 0 1px 0 rgba(255,255,255,0.18);
}

.feature-card h3 {
  color: var(--color-text-strong);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

/* ================================================================
   Callout / tip box
   ================================================================ */
.callout-tip {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  background-color: var(--color-primary-soft);
  border: 1px solid rgba(79, 70, 229, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-text-soft);
}

.callout-tip strong { color: var(--color-primary-strong); }

/* ================================================================
   Resolution badge
   ================================================================ */
.resolution-badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 700;
  margin-left: 0.5rem;
  letter-spacing: 0.02em;
}

/* ================================================================
   Ad cards
   ================================================================ */
.ad-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 0 auto 1.5rem;
  box-shadow: var(--shadow-xs);
  text-align: center;
}

.ad-card .card-header {
  background-color: var(--color-surface-tinted);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text-soft);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ================================================================
   Forms
   ================================================================ */
.form-select, .form-control {
  border: 1px solid var(--color-border-strong);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
  transition: border-color .15s, box-shadow .15s;
}

.form-select:focus, .form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-tint);
}

/* ================================================================
   Accordion
   ================================================================ */
.accordion-item {
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 0.75rem !important;
  overflow: hidden;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
}

.accordion-button {
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-surface);
  padding: 1rem 1.25rem;
  border-radius: 0 !important;
}

.accordion-button:not(.collapsed) {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-strong);
  box-shadow: none;
}

.accordion-button:focus {
  border-color: transparent;
  box-shadow: inset 0 0 0 3px var(--color-primary-tint);
}

.accordion-body {
  background-color: var(--color-surface);
  padding: 1rem 1.25rem 1.25rem;
  color: var(--color-text-soft);
}

/* ================================================================
   Alerts & badges
   ================================================================ */
.alert-info {
  background-color: var(--color-primary-soft);
  border-color: rgba(79,70,229,0.15);
  color: var(--color-primary-strong);
  border-radius: var(--radius-md);
}

.badge.bg-success {
  background-color: var(--color-success-soft) !important;
  color: var(--color-success) !important;
  border: 1px solid rgba(22, 163, 74, 0.2);
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 0.5rem 0.85rem;
}

/* ================================================================
   Footer
   ================================================================ */
.footer {
  background-color: #0b1120;
  color: #cbd5e1;
  padding: 3.5rem 0 1.5rem;
  margin-top: 4rem;
}

.footer h5 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 0.01em;
}

.footer p {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer a {
  color: #cbd5e1 !important;
  font-size: 0.9rem;
  transition: color .15s;
}

.footer a:hover {
  color: #fff !important;
}

.footer .text-white {
  color: #cbd5e1 !important;
}

.footer .text-white:hover {
  color: #fff !important;
}

.footer .brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background-color: rgba(79, 70, 229, 0.18);
  color: #c7d2fe;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.5rem;
}

/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 768px) {
  .hero {
    padding: 2rem 0 0.5rem;
  }
  .camera-section {
    padding: 0.5rem 0 2rem;
  }
  .camera-container {
    padding: 1.1rem;
  }
  #video-preview {
    min-height: 250px;
  }
  .camera-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .camera-controls .btn,
  .camera-controls .form-select {
    width: 100%;
  }
  .info-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }
  .info-value {
    text-align: left;
  }
  .feature-card {
    padding: 1.25rem;
  }
  section {
    padding-top: 2.25rem;
    padding-bottom: 2.25rem;
  }
}