/* ==========================================================================
   PROMAN - Project Management Template
   Design System & Global Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #3B82F6;
  --navy: #0F172A;
  --navy-light: #1E293B;
  --navy-lighter: #334155;
  --green: #10B981;
  --green-dark: #059669;
  --green-light: #34D399;

  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --container-max: 1200px;
  --header-height: 80px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--white);
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* --------------------------------------------------------------------------
   2. Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-bottom: var(--space-4);
  color: var(--gray-600);
}

.text-gradient {
  background: linear-gradient(135deg, var(--blue), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --------------------------------------------------------------------------
   3. Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

.section-sm {
  padding: var(--space-16) 0;
}

.grid {
  display: grid;
  gap: var(--space-8);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex {
  display: flex;
  align-items: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.flex-col {
  flex-direction: column;
}

/* --------------------------------------------------------------------------
   4. Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  transition: background var(--transition-base);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--white);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-300);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width var(--transition-fast);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--blue);
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: var(--navy);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--navy-light);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: var(--blue);
  color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--navy);
}

.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
}

.btn-green {
  background: var(--green);
  color: var(--white);
}

.btn-green:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
}

.btn-lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--blue-light);
  margin-bottom: var(--space-6);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  color: var(--white);
  font-size: var(--text-6xl);
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-stats {
  display: flex;
  gap: var(--space-12);
}

.hero-stat {
  text-align: left;
}

.hero-stat-number {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--white);
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: var(--gray-400);
}

/* Hero Visual */
.hero-visual {
  position: absolute;
  right: -5%;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  max-width: 600px;
  z-index: 1;
}

.hero-visual img {
  width: 100%;
  height: auto;
}

/* --------------------------------------------------------------------------
   7. Features / Services Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(16, 185, 129, 0.1));
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.card-icon img {
  width: 32px;
  height: 32px;
}

.card h3 {
  margin-bottom: var(--space-3);
}

.card p {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--blue);
  font-weight: 600;
  font-size: var(--text-sm);
}

.card-link:hover {
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   8. About Page
   -------------------------------------------------------------------------- */
.about-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-20);
  background: var(--navy);
  overflow: hidden;
}

.about-hero .container {
  position: relative;
  z-index: 1;
}

.about-hero h1 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.about-hero p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  max-width: 600px;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-content img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.about-content h2 {
  margin-bottom: var(--space-4);
}

.about-content p {
  margin-bottom: var(--space-6);
}

.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.value-card {
  text-align: center;
  padding: var(--space-8);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.value-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.value-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue), var(--green));
  border-radius: var(--radius-xl);
  margin: 0 auto var(--space-6);
}

.value-icon span {
  font-size: var(--text-3xl);
}

/* Team Section */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.team-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--transition-base);
}

.team-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.team-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.team-card-info {
  padding: var(--space-6);
  text-align: center;
}

.team-card-info h4 {
  margin-bottom: var(--space-1);
}

.team-card-info p {
  color: var(--blue);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.team-social {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}

.team-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  color: var(--gray-500);
  transition: all var(--transition-fast);
}

.team-social a:hover {
  background: var(--blue);
  color: var(--white);
}

/* --------------------------------------------------------------------------
   9. Services Page
   -------------------------------------------------------------------------- */
.services-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-20);
  background: var(--navy);
}

.services-hero h1 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.services-hero p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  max-width: 600px;
}

.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

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

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

.service-detail img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.service-detail h2 {
  margin-bottom: var(--space-4);
}

.service-detail p {
  margin-bottom: var(--space-6);
}

.service-list {
  margin-bottom: var(--space-8);
}

.service-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--gray-600);
}

.service-list li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--green);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 700;
  flex-shrink: 0;
}

/* Pricing Cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  align-items: stretch;
}

.pricing-card {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--blue);
  transform: scale(1.05);
}

.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: var(--white);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
}

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

.pricing-card h3 {
  margin-bottom: var(--space-2);
}

.pricing-card .price {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: var(--space-6);
}

.pricing-card .price span {
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--gray-500);
}

.pricing-features {
  text-align: left;
  margin-bottom: var(--space-8);
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
  font-size: var(--text-sm);
}

.pricing-features li::before {
  content: '✓';
  color: var(--green);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   10. Features Page
   -------------------------------------------------------------------------- */
.features-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-20);
  background: var(--navy);
}

.features-hero h1 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.features-hero p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  max-width: 600px;
}

.feature-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--gray-200);
}

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

.feature-detail img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.feature-detail h3 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.feature-detail p {
  margin-bottom: var(--space-6);
}

.feature-tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: rgba(37, 99, 235, 0.1);
  color: var(--blue);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

/* --------------------------------------------------------------------------
   11. Testimonials
   -------------------------------------------------------------------------- */
.testimonials {
  background: var(--gray-50);
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.testimonial-stars {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
  color: #FBBF24;
  font-size: var(--text-lg);
}

.testimonial-text {
  font-size: var(--text-lg);
  color: var(--gray-700);
  margin-bottom: var(--space-6);
  font-style: italic;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.testimonial-author-info h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.testimonial-author-info p {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   12. Contact Page
   -------------------------------------------------------------------------- */
.contact-hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-20);
  background: var(--navy);
}

.contact-hero h1 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.contact-hero p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  max-width: 600px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-form {
  background: var(--white);
  padding: var(--space-10);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.contact-info {
  padding: var(--space-8);
}

.contact-info h3 {
  margin-bottom: var(--space-6);
}

.contact-item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-lg);
  color: var(--blue);
  flex-shrink: 0;
}

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

.contact-item p {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   13. CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
  position: relative;
  padding: var(--space-24) 0;
  background: var(--navy);
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  color: var(--white);
  margin-bottom: var(--space-4);
}

.cta-content p {
  color: var(--gray-400);
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
}

/* --------------------------------------------------------------------------
   14. Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--navy);
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--gray-800);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  color: var(--gray-400);
  font-size: var(--text-sm);
  margin-top: var(--space-4);
  max-width: 300px;
}

.footer h4 {
  color: var(--white);
  font-size: var(--text-base);
  margin-bottom: var(--space-6);
}

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  color: var(--gray-400);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
  color: var(--gray-500);
  font-size: var(--text-sm);
  margin-bottom: 0;
}

.footer-social {
  display: flex;
  gap: var(--space-4);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-800);
  border-radius: var(--radius-full);
  color: var(--gray-400);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--blue);
  color: var(--white);
}

/* --------------------------------------------------------------------------
   15. Animations
   -------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* --------------------------------------------------------------------------
   16. Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --text-6xl: 3rem;
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-visual {
    display: none;
  }

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

@media (max-width: 768px) {
  :root {
    --text-6xl: 2.25rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --header-height: 70px;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--navy);
    flex-direction: column;
    padding: var(--space-8);
    gap: var(--space-4);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .menu-toggle {
    display: flex;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: var(--text-4xl);
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-6);
  }

  .hero-actions {
    flex-direction: column;
  }

  .about-content,
  .service-detail,
  .feature-detail,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

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

  .team-grid,
  .about-values,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .section {
    padding: var(--space-16) 0;
  }
}

@media (max-width: 480px) {
  :root {
    --text-6xl: 1.875rem;
    --text-5xl: 1.75rem;
  }

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

  .card {
    padding: var(--space-6);
  }

  .btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
  }
}