/* Import clean modern typography from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* CSS Variables for design system */
:root {
  --bg-primary: #09090B;
  --bg-secondary: #121214;
  --bg-tertiary: #1A1A1E;
  --border-color: #27272A;
  --border-color-hover: #3F3F46;
  --text-primary: #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-muted: #71717A;
  --accent-color: #6366F1;
  --accent-color-hover: #4F46E5;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --success-color: #10B981;
  --error-color: #EF4444;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier, monospace;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  
  /* Subtle Notion Grid/Dot Background */
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 0),
    radial-gradient(rgba(255, 255, 255, 0.02) 1.5px, transparent 0);
  background-size: 32px 32px, 64px 64px;
  background-position: 0 0, 16px 16px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-color-hover);
}

/* Container & Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.section-header {
  max-width: 680px;
  margin-bottom: 56px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-color);
  background: var(--accent-glow);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(99, 102, 241, 0.2);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-description {
  font-size: 16px;
  color: var(--text-secondary);
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

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

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

/* Notion-inspired components */
.notion-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.notion-card:hover {
  border-color: var(--border-color-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.notion-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-color), #8B5CF6);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.notion-card:hover::after {
  opacity: 1;
}

.notion-callout {
  display: flex;
  gap: 16px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-color);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin: 24px 0;
}

.notion-callout-icon {
  font-size: 24px;
  line-height: 1;
}

.notion-callout-content {
  font-size: 15px;
  color: var(--text-secondary);
}

.notion-callout-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.notion-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.notion-tag:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* Custom list layout */
.notion-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notion-list-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}

.notion-list-item svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--accent-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--text-primary);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-color-hover);
}

.btn-accent {
  background-color: var(--accent-color);
  color: var(--text-primary);
  border-color: var(--accent-color);
}

.btn-accent:hover {
  background-color: var(--accent-color-hover);
  border-color: var(--accent-color-hover);
  box-shadow: 0 0 16px var(--accent-glow);
}

.btn-icon-only {
  padding: 10px;
}

/* Navigation Menu */
header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: border var(--transition-fast);
}

header.scrolled {
  border-bottom-color: var(--border-color-hover);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.logo svg {
  color: var(--accent-color);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
}

/* Hero Section */
.hero-section {
  padding: 140px 0 96px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

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

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #FAFAFA 0%, #A1A1AA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span {
  color: var(--accent-color);
  -webkit-text-fill-color: initial;
}

.hero-description {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

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

.hero-phone-mockup {
  width: 100%;
  max-width: 320px;
  border: 12px solid #1C1C1E;
  border-radius: 40px;
  background: #000000;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 0 0 40px rgba(99, 102, 241, 0.1);
  aspect-ratio: 9 / 19.5;
  position: relative;
  z-index: 2;
  transition: transform var(--transition-slow);
}

.hero-phone-mockup:hover {
  transform: rotate3d(1, 1, 0, 10deg) translateY(-8px);
}

/* Phone Screen Content */
.phone-screen {
  width: 100%;
  height: 100%;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.15), transparent 70%);
}

.phone-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
}

.phone-body {
  flex-grow: 1;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.phone-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 12px;
}

.phone-card-header {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.phone-card-text {
  font-size: 11px;
  color: var(--text-muted);
}

.phone-footer {
  display: flex;
  justify-content: space-around;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 12px;
}

/* Decorative backdrop glow for hero */
.hero-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: var(--accent-glow);
  filter: blur(120px);
  border-radius: 50%;
  top: 10%;
  right: -5%;
  z-index: 1;
}

/* Logo Cloud Section */
.logo-slider-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  overflow: hidden;
  padding: 24px 0;
  position: relative;
}

.logo-slider-container::before, .logo-slider-container::after {
  content: '';
  position: absolute;
  top: 0;
  width: 80px;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.logo-slider-container::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-primary), transparent);
}

.logo-slider-container::after {
  right: 0;
  background: linear-gradient(-90deg, var(--bg-primary), transparent);
}

.logo-slider {
  display: flex;
  gap: 64px;
  animation: scrollLogos 30s linear infinite;
  white-space: nowrap;
}

.logo-item {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: -0.05em;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-item:hover {
  opacity: 0.9;
  color: var(--text-primary);
}

@keyframes scrollLogos {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Service Cards Grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--accent-color);
  margin-bottom: 24px;
}

.service-card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* Tech Stack Tab Component */
.tech-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 32px;
}

.tech-tab-btn {
  background: none;
  border: none;
  padding: 12px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

.tech-tab-btn:hover {
  color: var(--text-primary);
}

.tech-tab-btn.active {
  color: var(--text-primary);
}

.tech-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-color);
}

.tech-pane {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  animation: fadeIn var(--transition-normal);
}

.tech-pane.active {
  display: grid;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
}

.tech-item svg {
  color: var(--accent-color);
}

.tech-name {
  font-weight: 500;
  font-size: 14px;
}

/* Timeline Layout */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0px;
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 7px;
  width: 1px;
  height: calc(100% - 16px);
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: 48px;
}

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

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 4px solid var(--accent-color);
  z-index: 2;
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.timeline-step {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.timeline-title {
  font-size: 18px;
  font-weight: 700;
}

.timeline-content {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 720px;
}

/* Portfolio Filter & Grid */
.portfolio-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--text-primary);
  border-color: var(--text-primary);
  color: var(--bg-primary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.portfolio-card {
  cursor: pointer;
  padding: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.portfolio-img-container {
  width: 100%;
  height: 280px;
  background-color: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.portfolio-card:hover .portfolio-img-container img {
  transform: scale(1.04);
}

.portfolio-img-container img {
  width: auto;
  height: 90%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

.portfolio-card-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.portfolio-title {
  font-size: 22px;
  font-weight: 700;
}

.portfolio-desc {
  font-size: 14px;
  color: var(--text-secondary);
}

.portfolio-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
}

/* Contact Info Layout */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-block {
  display: flex;
  gap: 16px;
}

.contact-block-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  flex-shrink: 0;
}

.contact-block-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-block-text {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Map Mock Container */
.map-mock-container {
  height: 240px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  margin-top: 16px;
}

.map-bg {
  width: 100%;
  height: 100%;
  background: radial-gradient(#1A1A22 10%, transparent 11%), radial-gradient(#1A1A22 10%, transparent 11%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  background-color: #0E0E12;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-marker {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: bounce 2s infinite ease-in-out;
  cursor: pointer;
  z-index: 10;
}

.map-marker-pin {
  width: 32px;
  height: 32px;
  background: var(--accent-color);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.map-marker-pin::after {
  content: '';
  width: 12px;
  height: 12px;
  background: #000;
  border-radius: 50%;
}

.map-popup {
  position: absolute;
  bottom: 40px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  font-size: 12px;
  font-family: var(--font-mono);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}

.map-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-md);
  border: 2px solid rgba(255, 255, 255, 0.03);
  pointer-events: none;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Contact Form Styling */
.contact-form-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 40px;
}

.form-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-error {
  display: none;
  font-size: 12px;
  color: var(--error-color);
  margin-top: 4px;
}

.form-input.invalid {
  border-color: var(--error-color);
}

.form-input.invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Custom Select Dropdown Mock */
.form-select-wrapper {
  position: relative;
}

.form-select-wrapper::after {
  content: '▼';
  font-size: 10px;
  color: var(--text-muted);
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
}

/* Form Success State */
.form-success-state {
  display: none;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 0;
  animation: scaleIn var(--transition-normal);
}

.form-success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 24px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-success-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.form-success-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 320px;
}

/* Call to Action (CTA) Section */
.cta-card {
  background: linear-gradient(135deg, #18181B 0%, #0F0F11 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(99, 102, 241, 0.08), transparent 70%);
  z-index: 1;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
  margin: 0 auto;
}

.cta-title {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* Modal Popup Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-content {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  animation: slideUp var(--transition-normal);
  box-shadow: 0 20px 50px rgba(0,0,0,0.8);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close:hover {
  background-color: var(--border-color);
  border-color: var(--border-color-hover);
}

.modal-body {
  padding: 48px;
}

/* Footer styling */
footer {
  background-color: #050507;
  padding: 80px 0 48px 0;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 64px;
  margin-bottom: 64px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 280px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-link:hover {
  color: var(--text-primary);
  padding-left: 2px;
}

.footer-contact-item {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  align-items: flex-start;
}

.footer-contact-item svg {
  flex-shrink: 0;
  color: var(--text-muted);
  margin-top: 3px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-socials {
  display: flex;
  gap: 16px;
}

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

.social-link:hover {
  color: var(--text-primary);
}

/* Keyframes animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* Animations Trigger Classes */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Responsive Grid and Flex Fixes */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  
  .hero-content {
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
  }
}

@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }
  
  .hero-title {
    font-size: 40px;
  }
  
  .nav-menu {
    display: none; /* Controlled by JS for hamburger menu */
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
    align-items: flex-start;
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav-actions {
    display: none;
  }
  
  .nav-menu.open ~ .nav-actions {
    display: flex;
  }
  
  .grid-3, .grid-4, .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-card {
    padding: 40px 24px;
  }
  
  .cta-title {
    font-size: 28px;
  }
  
  .modal-body {
    padding: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}