/* ═══════════════════════════════════════════════════
   Node and Nexus Ai - Design System
   Premium AI Agency Website
   ═══════════════════════════════════════════════════ */

/* ── CSS Custom Properties (Design Tokens) ── */
:root {
  /* Primary Palette */
  --primary: #0041a2;
  --primary-container: #0b57d0;
  --on-primary: #ffffff;
  --on-primary-container: #ced9ff;
  --primary-fixed: #dae2ff;
  --primary-fixed-dim: #b2c5ff;

  /* Secondary Palette */
  --secondary: #006b5b;
  --secondary-container: #53f8d9;
  --on-secondary: #ffffff;
  --on-secondary-container: #00705f;
  --secondary-fixed: #57fbdb;

  /* Tertiary Palette */
  --tertiary: #274b5f;
  --tertiary-container: #406377;
  --tertiary-fixed: #c3e7ff;

  /* Surface/Background */
  --background: #f8f9fa;
  --surface: #f8f9fa;
  --surface-dim: #d9dadb;
  --surface-bright: #f8f9fa;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f3f4f5;
  --surface-container: #edeeef;
  --surface-container-high: #e7e8e9;
  --surface-container-highest: #e1e3e4;

  /* On Surface */
  --on-background: #191c1d;
  --on-surface: #191c1d;
  --on-surface-variant: #424654;

  /* Outline */
  --outline: #737785;
  --outline-variant: #c3c6d6;

  /* Error */
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --on-error: #ffffff;

  /* Inverse */
  --inverse-surface: #2e3132;
  --inverse-on-surface: #f0f1f2;
  --inverse-primary: #b2c5ff;

  /* Gradient */
  --gradient-primary: linear-gradient(135deg, #0041a2 0%, #006b5b 100%);
  --gradient-glow: linear-gradient(135deg, rgba(0,65,162,0.1) 0%, rgba(0,107,91,0.1) 100%);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-glow: 0 8px 32px rgba(0,65,162,0.15);

  /* Typography */
  --font-headline: 'Manrope', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-label: 'Inter', system-ui, sans-serif;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-2xl: 3rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--background);
  color: var(--on-surface);
  line-height: 1.6;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}

img {
  max-width: 100%;
  display: block;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ── Typography ── */
.font-headline { font-family: var(--font-headline); }
.font-body { font-family: var(--font-body); }
.font-label { font-family: var(--font-label); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

/* ── Material Symbols ── */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  vertical-align: middle;
}

/* ── Gradient Utilities ── */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-bg {
  background: var(--gradient-primary);
}

.gradient-glow-bg {
  background: var(--gradient-glow);
}

/* ── Glass Effect ── */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ══════════════════════════════════════════
   HEADER / NAVIGATION
   ══════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  height: 2.5rem;
  width: auto;
  object-fit: contain;
}

.nav-desktop {
  display: none;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 0.875rem;
  color: #64748b;
  transition: color var(--transition-fast), opacity var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  opacity: 0.9;
}

.nav-link.active {
  color: #2563eb;
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.header-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--surface-container-high);
  border: 2px solid rgba(11, 87, 208, 0.15);
}

.header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--primary);
  border-radius: var(--radius-sm);
}

/* ── Mobile Bottom Nav ── */
.bottom-nav {
  display: flex;
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid rgba(0,0,0,0.04);
  box-shadow: 0 -8px 30px rgba(0,0,0,0.04);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  padding: 0.75rem 1rem 1.5rem;
}

.bottom-nav-inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  width: 100%;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  color: #94a3b8;
  transition: all var(--transition-fast);
  border-radius: var(--radius-full);
  text-decoration: none;
}

.bottom-nav-item:hover {
  color: #2563eb;
}

.bottom-nav-item.active {
  background: #eff6ff;
  color: #1d4ed8;
}

.bottom-nav-item .material-symbols-outlined {
  font-size: 1.5rem;
}

.bottom-nav-item span:last-child {
  font-family: var(--font-label);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.25rem;
}

/* ══════════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1rem;
  padding: 1rem 2rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.95);
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--on-primary);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 40px rgba(0,65,162,0.25);
}

.btn-secondary {
  background: var(--surface-container-high);
  color: var(--primary);
}

.btn-secondary:hover {
  background: var(--surface-container-highest);
}

.btn-outline {
  background: var(--surface-container-lowest);
  color: var(--primary);
  border: 1px solid var(--outline-variant);
}

.btn-outline:hover {
  border-color: var(--primary);
}

.btn-lg {
  font-size: 1.125rem;
  padding: 1.25rem 2.5rem;
}

.btn-full {
  width: 100%;
}

/* ══════════════════════════════════════════
   CARDS
   ══════════════════════════════════════════ */
.card {
  background: var(--surface-container-low);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all var(--transition-slow);
  border: none;
  position: relative;
  overflow: hidden;
}

.card:hover {
  background: var(--surface-container-highest);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-full);
  background: var(--surface-container-highest);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: all var(--transition-base);
}

.card:hover .card-icon {
  background: var(--primary-container);
}

.card-icon .material-symbols-outlined {
  font-size: 1.75rem;
  color: var(--primary);
}

.card:hover .card-icon .material-symbols-outlined {
  color: var(--on-primary);
}

.card-title {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--on-surface);
}

.card-text {
  color: var(--on-surface-variant);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  font-weight: 700;
  transition: gap var(--transition-base);
}

.card-link:hover {
  gap: 1rem;
}

/* ══════════════════════════════════════════
   BADGE / TAG
   ══════════════════════════════════════════ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--surface-container-low);
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary);
}

.badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--secondary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ══════════════════════════════════════════
   FORM ELEMENTS
   ══════════════════════════════════════════ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary);
}

.form-input {
  width: 100%;
  background: var(--surface-container-low);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 1rem;
  color: var(--on-surface);
  transition: all var(--transition-fast);
}

.form-input::placeholder {
  color: rgba(115, 119, 133, 0.5);
}

.form-input:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 4px rgba(83, 248, 217, 0.15);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

/* ══════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════ */
.site-footer {
  width: 100%;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  margin-top: 3rem;
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 3rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: #64748b;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--secondary);
}

.footer-copy {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: #94a3b8;
}

/* ══════════════════════════════════════════
   HERO SECTION
   ══════════════════════════════════════════ */
.hero {
  position: relative;
  padding: 6rem 0 4rem;
  overflow: hidden;
}

.hero-decoration-1 {
  position: absolute;
  top: 5rem;
  right: -5rem;
  width: 24rem;
  height: 24rem;
  background: rgba(0, 65, 162, 0.05);
  border-radius: var(--radius-full);
  filter: blur(60px);
  pointer-events: none;
}

.hero-decoration-2 {
  position: absolute;
  bottom: 0;
  left: 2.5rem;
  width: 16rem;
  height: 16rem;
  background: rgba(0, 107, 91, 0.05);
  border-radius: var(--radius-full);
  filter: blur(60px);
  pointer-events: none;
}

/* ── Metrics ── */
.metrics-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  border-top: 1px solid rgba(195, 198, 214, 0.15);
  padding-top: 2rem;
  margin-top: 3rem;
}

.metric {
  text-align: left;
}

.metric-value {
  font-family: var(--font-headline);
  font-size: 1.875rem;
  font-weight: 900;
  color: var(--on-surface);
}

.metric-label {
  font-family: var(--font-label);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
}

.metric-divider {
  width: 1px;
  height: 2.5rem;
  background: rgba(195, 198, 214, 0.3);
  display: none;
}

/* ── Hero Image ── */
.hero-visual {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  aspect-ratio: 1;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-glass-card {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-glass-card .glass-inner {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.glass-icon {
  background: var(--secondary-container);
  padding: 0.75rem;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.glass-icon .material-symbols-outlined {
  color: var(--on-secondary-container);
}

/* ══════════════════════════════════════════
   BENTO GRID / SERVICES SECTION
   ══════════════════════════════════════════ */
.bento-grid {
  display: grid;
  gap: 1.5rem;
}

.bento-large {
  position: relative;
  overflow: hidden;
  padding: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--surface-container-low);
  transition: background var(--transition-base);
}

.bento-large:hover {
  background: var(--surface-container-highest);
}

.bento-large .decoration-circle {
  position: absolute;
  right: -5rem;
  bottom: -5rem;
  width: 20rem;
  height: 20rem;
  background: rgba(0, 65, 162, 0.05);
  border-radius: var(--radius-full);
  transition: transform var(--transition-slow);
}

.bento-large:hover .decoration-circle {
  transform: scale(1.25);
}

.bento-small {
  padding: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--surface-container-low);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background var(--transition-base);
}

.bento-small:hover {
  background: var(--surface-container-highest);
}

.progress-bar {
  height: 0.5rem;
  width: 100%;
  background: var(--surface-container-highest);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: 2rem;
}

.progress-fill {
  height: 100%;
  background: var(--secondary);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

/* ══════════════════════════════════════════
   CASE STUDIES / INSIGHTS
   ══════════════════════════════════════════ */
.case-study-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--surface-container-low);
  padding: 2rem;
  transition: all var(--transition-slow);
}

.case-study-card:hover {
  background: var(--surface-container-high);
}

.case-stat {
  text-align: right;
}

.case-stat-value {
  font-family: var(--font-headline);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
}

.case-stat-label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
}

.impact-card {
  background: var(--primary-container);
  border-radius: var(--radius-md);
  padding: 2rem;
  color: var(--on-primary-container);
  position: relative;
  overflow: hidden;
}

.impact-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 0.75rem;
}

.impact-row:last-child {
  border-bottom: none;
}

.impact-label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  opacity: 0.7;
}

.impact-value {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
}

/* Fintech Split Card */
.split-card {
  display: grid;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-container-lowest);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-slow);
}

.split-card:hover {
  box-shadow: var(--shadow-xl);
}

.split-card-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.split-card-visual {
  position: relative;
  min-height: 300px;
  background: #0f172a;
  overflow: hidden;
}

.split-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  mix-blend-mode: luminosity;
}

.split-card-visual .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,65,162,0.4), transparent);
}

.split-card-visual .glass-overlay {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ══════════════════════════════════════════
   CONTACT PAGE
   ══════════════════════════════════════════ */
.contact-form-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(195, 198, 214, 0.1);
}

.schedule-card {
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.schedule-card .decoration {
  position: absolute;
  bottom: -3rem;
  right: -3rem;
  width: 12rem;
  height: 12rem;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  filter: blur(40px);
  transition: background var(--transition-base);
}

.schedule-card:hover .decoration {
  background: rgba(255,255,255,0.2);
}

.btn-schedule {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--secondary-container);
  color: var(--on-secondary-container);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  transition: transform var(--transition-fast);
}

.btn-schedule:hover {
  transform: scale(1.05);
}

.btn-schedule:active {
  transform: scale(0.95);
}

/* Calendar */
.calendar-card {
  background: var(--surface-container-low);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(195, 198, 214, 0.1);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  text-align: center;
}

.calendar-day-label {
  font-family: var(--font-label);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--outline);
}

.calendar-day {
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.calendar-day:hover {
  background: var(--surface-container-high);
}

.calendar-day.muted {
  color: rgba(115, 119, 133, 0.3);
  cursor: default;
}

.calendar-day.muted:hover {
  background: transparent;
}

.calendar-day.active {
  background: var(--primary-container);
  color: var(--on-primary-container);
}

.calendar-day.selected {
  background: var(--secondary);
  color: var(--on-secondary);
}

/* Contact Info Cards */
.info-card {
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--surface-container);
  border: 1px solid rgba(195, 198, 214, 0.1);
}

.info-card .material-symbols-outlined {
  color: var(--secondary);
  margin-bottom: 0.5rem;
}

.info-card-label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--outline);
}

.info-card-value {
  font-weight: 700;
  color: var(--on-surface);
}

/* ══════════════════════════════════════════
   CTA SECTION
   ══════════════════════════════════════════ */
.cta-section {
  text-align: center;
  padding: 6rem 1.5rem;
  border-radius: var(--radius-md);
  background: var(--surface-container-high);
  position: relative;
  overflow: hidden;
  margin-top: 5rem;
}

.cta-section .cta-decoration-1 {
  position: absolute;
  top: 0;
  right: 0;
  width: 16rem;
  height: 16rem;
  background: rgba(0,107,91,0.05);
  border-radius: var(--radius-full);
  margin-right: -8rem;
  margin-top: -8rem;
  filter: blur(60px);
}

.cta-section .cta-decoration-2 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24rem;
  height: 24rem;
  background: rgba(0,65,162,0.05);
  border-radius: var(--radius-full);
  margin-left: -12rem;
  margin-bottom: -12rem;
  filter: blur(60px);
}

/* ══════════════════════════════════════════
   ASYMMETRIC DETAIL SECTION
   ══════════════════════════════════════════ */
.detail-visual {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 16/9;
}

.detail-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
  transition: filter 700ms ease;
}

.detail-visual:hover img {
  filter: grayscale(0);
}

.detail-visual .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 65, 162, 0.2);
  mix-blend-mode: multiply;
}

.detail-visual .glass-label {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-sm);
  max-width: 20rem;
}

/* ══════════════════════════════════════════
   TOAST / NOTIFICATIONS
   ══════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 6rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--inverse-surface);
  color: var(--inverse-on-surface);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  z-index: 200;
  opacity: 0;
  transition: all var(--transition-base);
  font-weight: 600;
  max-width: 90%;
  text-align: center;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  background: var(--secondary);
  color: var(--on-secondary);
}

.toast.error {
  background: var(--error);
  color: var(--on-error);
}

/* ══════════════════════════════════════════
   ANIMATIONS
   ══════════════════════════════════════════ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* ══════════════════════════════════════════
   RESPONSIVE DESIGN
   ══════════════════════════════════════════ */

/* Tablet (768px+) */
@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .bottom-nav {
    display: none;
  }

  .hero {
    padding: 8rem 0 5rem;
  }

  .hero-visual {
    aspect-ratio: auto;
    height: 600px;
  }

  .metric-divider {
    display: block;
  }

  .bento-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .bento-large {
    grid-column: span 2;
  }

  .contact-form-card {
    padding: 3rem;
  }

  .split-card {
    grid-template-columns: 1fr 1fr;
  }

  .split-card-content {
    padding: 4rem;
  }

  .site-footer {
    margin-bottom: 0;
  }
}

/* Desktop Grid */
@media (min-width: 1024px) {
  .hero-grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: center;
  }

  .container {
    padding: 0 2rem;
  }

  .case-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
  }

  .case-grid-7 { grid-column: span 7; }
  .case-grid-5 { grid-column: span 5; }
  .case-grid-12 { grid-column: span 12; }

  .contact-grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 2rem;
  }

  .detail-grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: center;
  }
}

/* Small screens — footer spacing for bottom nav */
@media (max-width: 767px) {
  .site-footer {
    margin-bottom: 5rem;
  }

  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .case-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .contact-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .detail-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .info-grid {
    grid-template-columns: 1fr !important;
  }
}

/* Two-column form grid */
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .form-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* ══════════════════════════════════════════
   LOADING / SKELETON
   ══════════════════════════════════════════ */
.page-transition {
  animation: fadeIn 0.4s ease;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--surface-container);
}

::-webkit-scrollbar-thumb {
  background: var(--outline-variant);
  border-radius: var(--radius-full);
}

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