/* ==========================================================================
   SOHO SOLUTIONS — Institutional & Corporate Dual-Theme Stylesheet
   Domain: www.solutions.sohog.org
   Official Brand Palette (from SOLUTIONS by SOHO|GROUP Logo):
   - SOHO Solutions Teal:  #0F5E63 / #136F75 / #14888F
   - SOHO Solutions Slate: #54626B / #475569 / #1E292E
   - Dark Theme: Soft Slate-Petroleum (Max 20% Black) + Brand Teal/Slate
   - Light Theme: Crisp Whites (#FFFFFF / #F4F7F8) + Brand Teal/Slate
   ========================================================================== */

:root,
html[data-theme="dark"] {
  --bg-primary: #1E292E;
  --bg-secondary: #222E34;
  --bg-surface: #28373E;
  --bg-surface-elevated: #2F4048;
  --bg-subcard: #1B252A;
  --bg-input: #1A2429;
  --border-subtle: #3A4E57;
  --border-accent: #17858C;
  --accent-primary: #0F5E63;
  --accent-bright: #14888F;
  --accent-deep: #0B484C;
  --accent-label: #4FD1C5;
  --accent-badge-bg: rgba(20, 136, 143, 0.2);
  --accent-badge-border: rgba(79, 209, 197, 0.4);
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --card-shadow: 0 10px 30px -10px rgba(10, 18, 22, 0.45);
  --card-hover-shadow: 0 16px 38px -10px rgba(15, 94, 99, 0.45), 0 0 0 1px rgba(20, 136, 143, 0.5);
  --grid-line: rgba(148, 163, 184, 0.09);
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg-primary: #FFFFFF;
  --bg-secondary: #F4F7F8;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F8FAFC;
  --bg-subcard: #F1F5F9;
  --bg-input: #F8FAFC;
  --border-subtle: #CBD5E1;
  --border-accent: #0F5E63;
  --accent-primary: #0F5E63;
  --accent-bright: #136F75;
  --accent-deep: #0B484C;
  --accent-label: #0F5E63;
  --accent-badge-bg: rgba(15, 94, 99, 0.1);
  --accent-badge-border: rgba(15, 94, 99, 0.3);
  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-muted: #54626B;
  --card-shadow: 0 8px 24px -8px rgba(30, 41, 59, 0.08);
  --card-hover-shadow: 0 16px 36px -10px rgba(15, 94, 99, 0.18), 0 0 0 1px rgba(15, 94, 99, 0.35);
  --grid-line: rgba(84, 98, 107, 0.08);
  color-scheme: light;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  transition: background-color 0.25s ease, color 0.25s ease;
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.theme-heading,
.font-sans,
.font-mono {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Theme-Aware Semantic Classes */
.theme-bg-primary {
  background-color: var(--bg-primary);
}

.theme-bg-secondary {
  background-color: var(--bg-secondary);
}

.theme-bg-surface {
  background-color: var(--bg-surface);
}

.theme-bg-subcard {
  background-color: var(--bg-subcard);
}

.theme-border {
  border-color: var(--border-subtle);
}

.theme-text-primary {
  color: var(--text-primary);
}

.theme-text-secondary {
  color: var(--text-secondary);
}

.theme-text-muted {
  color: var(--text-muted);
}

.theme-accent-label {
  color: var(--accent-label);
}

.theme-badge {
  background-color: var(--accent-badge-bg);
  border: 1px solid var(--accent-badge-border);
  color: var(--accent-label);
}

/* Primary Brand CTA Button (SOHO Solutions Teal) */
.btn-soho-primary {
  background-color: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: 0 6px 20px -4px rgba(15, 94, 99, 0.45);
  transition: background-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.btn-soho-primary:hover {
  background-color: var(--accent-bright);
  box-shadow: 0 10px 28px -4px rgba(20, 136, 143, 0.6);
  transform: translateY(-1px);
}

/* Full-Width Responsive Hero Background with Aerial Port & Global Network */
.hero-full-bg {
  background-image: url('../assets/img/hero-bg-global-trade.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.hero-overlay-gradient {
  background: linear-gradient(
    90deg,
    rgba(22, 33, 38, 0.90) 0%,
    rgba(24, 38, 44, 0.78) 48%,
    rgba(15, 58, 64, 0.42) 100%
  );
}

/* Architectural Background Grid */
.bg-architectural-grid {
  background-color: var(--bg-secondary);
  background-size: 48px 48px;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
}

/* Executive Surface Card with Precision Hover */
.executive-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--card-shadow);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.25s ease;
}

.executive-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-2px);
}

/* Reveal Animations on Scroll */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Form Input Styling & High-Contrast Focus States */
.form-input-executive {
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.form-input-executive:hover {
  border-color: var(--border-accent);
}

.form-input-executive:focus {
  outline: none;
  border-color: var(--accent-bright);
  background-color: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(20, 136, 143, 0.25);
}

/* Custom Select Arrow */
select.form-input-executive {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748B' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  background-size: 1rem 1rem;
  padding-right: 2.5rem;
}

/* Subtle Pulse Indicator for Active Units */
@keyframes pulse-teal {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(1.15);
  }
}

.status-dot-pulse {
  animation: pulse-teal 2.4s infinite ease-in-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* Interactive Document Audit Tier Selector & Synchronized Table */
.tier-stop-marker {
  color: var(--text-secondary);
  background-color: transparent;
  border: 1px solid transparent;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.tier-stop-marker:hover {
  color: var(--text-primary);
  background-color: var(--bg-subcard);
  border-color: var(--border-accent);
}

.tier-stop-marker.is-active {
  color: #FFFFFF;
  background-color: var(--accent-primary);
  border-color: var(--accent-bright);
  box-shadow: 0 4px 12px -2px rgba(15, 94, 99, 0.45);
  transform: translateY(-1px);
}

.tier-table-row {
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.tier-table-row:hover {
  background-color: var(--bg-surface-elevated);
}

.tier-table-row.is-active {
  background-color: var(--accent-badge-bg);
  box-shadow: inset 4px 0 0 0 var(--accent-primary);
}

/* Custom Range Slider for Tier Selection */
.tier-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 9999px;
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  outline: none;
  cursor: pointer;
}

.tier-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: 3px solid #FFFFFF;
  box-shadow: 0 2px 10px rgba(15, 94, 99, 0.55);
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.tier-slider::-webkit-slider-thumb:hover {
  transform: scale(1.12);
  background: var(--accent-bright);
}

.tier-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-primary);
  border: 3px solid #FFFFFF;
  box-shadow: 0 2px 10px rgba(15, 94, 99, 0.55);
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

/* Reduced Motion Accessibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .executive-card {
    transition: none !important;
  }
}