/* ========================================
   沿途科技（深圳）有限公司 - 企业官网
   Design System & Global Styles
   ======================================== */

/* --- CSS Variables --- */
:root {
  /* Primary Colors */
  --color-primary: #0F1B2D;
  --color-primary-light: #1A365D;
  --color-primary-medium: #234E78;
  --color-accent: #2B6CB0;
  --color-accent-light: #4299E1;
  --color-accent-soft: #BEE3F8;

  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-bg: #F7FAFC;
  --color-bg-alt: #EDF2F7;
  --color-border: #E2E8F0;

  /* Text Colors */
  --color-text: #1A202C;
  --color-text-secondary: #4A5568;
  --color-text-muted: #718096;
  --color-text-light: #A0AEC0;

  /* Status Colors */
  --color-success: #38A169;
  --color-warning: #D69E2E;
  --color-danger: #E53E3E;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

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

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

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }

p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header .label {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

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

.bg-dark {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-normal);
  border-radius: 1px;
}

.nav a:hover,
.nav a.active {
  color: var(--color-accent);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(43, 108, 176, 0.3);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(43, 108, 176, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

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

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-light) 40%, var(--color-primary-medium) 100%);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(66, 153, 225, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(43, 108, 176, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4xl);
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.4rem 1rem;
  background: rgba(66, 153, 225, 0.15);
  border: 1px solid rgba(66, 153, 225, 0.25);
  border-radius: 50px;
  color: var(--color-accent-light);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--space-xl);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent-light);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  font-size: 3.5rem;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  line-height: 1.2;
}

.hero h1 span {
  background: linear-gradient(135deg, #63B3ED, #4299E1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.hero-stat-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: transform var(--transition-normal);
}

.hero-stat-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.1);
}

.hero-stat-card .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent-light);
  margin-bottom: var(--space-xs);
}

.hero-stat-card .label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 1024px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }

  .hero-content {
    max-width: 100%;
  }

  .hero p {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-card-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .hero-stat-card {
    padding: var(--space-md);
  }
}

/* ========================================
   SERVICES CARDS
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
  transform-origin: left;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
}

.service-icon.blue { background: #EBF8FF; color: #2B6CB0; }
.service-icon.teal { background: #E6FFFA; color: #319795; }
.service-icon.purple { background: #FAF5FF; color: #6B46C1; }
.service-icon.orange { background: #FFFAF0; color: #C05621; }
.service-icon.green { background: #F0FFF4; color: #276749; }
.service-icon.red { background: #FFF5F5; color: #C53030; }

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   FEATURES / VALUE PROPS
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.feature-item {
  text-align: center;
  padding: var(--space-lg);
}

.feature-item .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  background: var(--color-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all var(--transition-normal);
}

.feature-item:hover .icon {
  background: var(--color-accent);
  transform: scale(1.1);
}

.feature-item h4 {
  margin-bottom: var(--space-sm);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  text-align: center;
  padding: var(--space-4xl) 0;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  font-size: 1.1rem;
}

/* ========================================
   STATS BAR
   ======================================== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  padding: var(--space-2xl) 0;
}

.stat-item {
  text-align: center;
  padding: var(--space-lg);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
  line-height: 1;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   ABOUT PAGE
   ======================================== */
.page-banner {
  background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: calc(var(--header-height) + var(--space-4xl)) 0 var(--space-3xl);
  text-align: center;
}

.page-banner h1 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.page-banner p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--color-accent-soft), var(--color-bg));
  border-radius: var(--radius-xl);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--color-accent);
}

.about-text h2 {
  margin-bottom: var(--space-lg);
}

.about-text p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

/* Mission & Vision */
.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.mission-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-normal);
}

.mission-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.mission-card .icon {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.mission-card h3 {
  margin-bottom: var(--space-sm);
}

.mission-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: var(--space-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-2xl) - 4px);
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.timeline-item h4 {
  margin-bottom: var(--space-xs);
}

.timeline-item p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
  }

  .mission-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   SERVICES PAGE
   ======================================== */
.service-detail-section {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.service-detail-section:last-child {
  border-bottom: none;
}

.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.service-detail.reverse {
  direction: rtl;
}

.service-detail.reverse .service-detail-content {
  direction: ltr;
}

.service-detail-visual {
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  direction: ltr;
}

.service-detail-visual.blue { background: linear-gradient(135deg, #EBF8FF, #BEE3F8); color: #2B6CB0; }
.service-detail-visual.teal { background: linear-gradient(135deg, #E6FFFA, #B2F5EA); color: #319795; }
.service-detail-visual.purple { background: linear-gradient(135deg, #FAF5FF, #E9D8FD); color: #6B46C1; }
.service-detail-visual.orange { background: linear-gradient(135deg, #FFFAF0, #FEEBC8); color: #C05621; }
.service-detail-visual.green { background: linear-gradient(135deg, #F0FFF4, #C6F6D5); color: #276749; }
.service-detail-visual.red { background: linear-gradient(135deg, #FFF5F5, #FED7D7); color: #C53030; }

.service-detail-content h2 {
  margin-bottom: var(--space-md);
}

.service-detail-content p {
  margin-bottom: var(--space-lg);
  color: var(--color-text-secondary);
}

.service-detail-list {
  display: grid;
  gap: var(--space-md);
}

.service-detail-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.service-detail-list li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  min-width: 24px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

/* Process Steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  counter-reset: step;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto var(--space-lg);
}

.process-step h4 {
  margin-bottom: var(--space-xs);
}

.process-step p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .service-detail {
    grid-template-columns: 1fr;
  }

  .service-detail.reverse {
    direction: ltr;
  }

  .service-detail-visual {
    height: 240px;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .process-steps {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   CONTACT PAGE
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
}

.contact-info h2 {
  margin-bottom: var(--space-lg);
}

.contact-info > p {
  margin-bottom: var(--space-2xl);
}

.contact-details {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.contact-item {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.contact-item .icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-item h4 {
  margin-bottom: var(--space-xs);
  font-size: 1rem;
}

.contact-item p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Contact Form */
.contact-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.contact-form h3 {
  margin-bottom: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.1);
  background: var(--color-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

.footer h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: grid;
  gap: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.85rem;
}

.footer-bottom a:hover {
  color: var(--color-white);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delay utilities */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* ========================================
   UTILS
   ======================================== */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.mt-2 { margin-top: var(--space-2xl); }