/* ============================================
   DESIGN SYSTEM — Abdulloh Nugroho Alkholili
   Minimalist · Professional · Dark
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

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

/* --- Custom Properties --- */
:root {
  /* Colors */
  --bg-primary: #060a13;
  --bg-secondary: #0c1220;
  --bg-card: rgba(15, 23, 42, 0.6);
  --bg-card-hover: rgba(20, 30, 55, 0.8);
  --bg-glass: rgba(15, 23, 42, 0.45);
  --border-glass: rgba(79, 125, 245, 0.12);
  --border-glass-hover: rgba(79, 125, 245, 0.3);

  --accent: #4f7df5;
  --accent-light: #7ba3ff;
  --accent-glow: rgba(79, 125, 245, 0.15);
  --accent-gradient: linear-gradient(135deg, #4f7df5, #7ba3ff);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 120px 0;
  --container-width: 1200px;
  --container-padding: 0 24px;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 50%;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(79, 125, 245, 0.1);
}

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

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

::selection {
  background: var(--accent);
  color: #fff;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 3px;
}

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* --- Section --- */
.section {
  padding: var(--section-padding);
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 16px;
  display: block;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* =============================================
   NAVIGATION
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-base);
}

.navbar.scrolled {
  background: rgba(6, 10, 19, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 12px 0;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: #fff;
}

.nav-logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--accent-glow);
}

.nav-cta {
  margin-left: 16px;
}

.nav-cta a {
  background: var(--accent-gradient) !important;
  color: #fff !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-md) !important;
  font-weight: 600 !important;
  transition: var(--transition-base) !important;
  box-shadow: 0 4px 16px rgba(79, 125, 245, 0.3);
}

.nav-cta a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 125, 245, 0.4) !important;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Video Background */
.hero-video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-video-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Dark Overlay on video */
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(6, 10, 19, 0.65) 0%,
    rgba(6, 10, 19, 0.5) 40%,
    rgba(6, 10, 19, 0.75) 80%,
    rgba(6, 10, 19, 1) 100%
  );
  z-index: 1;
}

/* Animated Grid Overlay (CSS fallback + extra detail) */
.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background-image:
    linear-gradient(rgba(79, 125, 245, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 125, 245, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: gridPulse 8s ease-in-out infinite;
}

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

/* Floating Particles */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 12s infinite;
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 10s; }
.particle:nth-child(2) { left: 25%; animation-delay: 2s; animation-duration: 14s; }
.particle:nth-child(3) { left: 40%; animation-delay: 4s; animation-duration: 11s; }
.particle:nth-child(4) { left: 55%; animation-delay: 1s; animation-duration: 13s; }
.particle:nth-child(5) { left: 70%; animation-delay: 3s; animation-duration: 12s; }
.particle:nth-child(6) { left: 85%; animation-delay: 5s; animation-duration: 15s; }
.particle:nth-child(7) { left: 15%; animation-delay: 6s; animation-duration: 10s; }
.particle:nth-child(8) { left: 60%; animation-delay: 7s; animation-duration: 11s; }

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-20vh) scale(1);
    opacity: 0;
  }
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 100px;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-light);
  letter-spacing: 1px;
  text-transform: uppercase;
  animation: fadeInDown 0.8s ease-out;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.08;
  letter-spacing: -2px;
  margin-bottom: 12px;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-title .accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 580px;
  margin: 0 auto 44px;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(79, 125, 245, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(79, 125, 245, 0.5);
}

.btn-secondary {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  border-color: var(--border-glass-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: fadeInUp 0.8s ease-out 1s both;
}

.scroll-indicator span {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.3; }
}

/* =============================================
   ABOUT SECTION
   ============================================= */
.about {
  background: var(--bg-secondary);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 80px;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-image {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-glass);
  filter: grayscale(20%);
  transition: var(--transition-base);
}

.about-image:hover {
  filter: grayscale(0%);
  border-color: var(--border-glass-hover);
}

.about-image-glow {
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 100%;
  height: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-lg);
  opacity: 0.08;
  z-index: -1;
  filter: blur(30px);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

.about-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Stats */
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 16px;
}

.stat-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  transition: var(--transition-base);
}

.stat-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* =============================================
   COMPETENCIES SECTION
   ============================================= */
.competencies-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.competency-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.competency-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-base);
}

.competency-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.competency-card:hover::before {
  opacity: 1;
}

.competency-icon {
  width: 52px;
  height: 52px;
  background: var(--accent-glow);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  transition: var(--transition-base);
}

.competency-card:hover .competency-icon {
  background: var(--accent-gradient);
  transform: scale(1.05);
}

.competency-card:hover .competency-icon svg {
  color: #fff;
}

.competency-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
  transition: var(--transition-base);
}

.competency-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.competency-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* =============================================
   PORTFOLIO SECTION
   ============================================= */
.portfolio {
  background: var(--bg-secondary);
  position: relative;
}

.portfolio::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.portfolio-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.portfolio-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.portfolio-card-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.portfolio-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.portfolio-card-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.portfolio-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 5px 12px;
  border-radius: 100px;
  letter-spacing: 0.5px;
}

/* Featured card (full width) */
.portfolio-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.portfolio-card.featured .portfolio-visual {
  background: linear-gradient(135deg, var(--bg-card), rgba(79, 125, 245, 0.05));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}

.portfolio-visual-chart {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 140px;
}

.chart-bar {
  width: 28px;
  border-radius: 6px 6px 0 0;
  transition: var(--transition-slow);
  position: relative;
}

.chart-bar::after {
  content: attr(data-label);
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* =============================================
   CONTACT SECTION
   ============================================= */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

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

.contact-tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition-base);
}

.contact-method:hover {
  border-color: var(--border-glass-hover);
  transform: translateX(8px);
  box-shadow: var(--shadow-glow);
}

.contact-method-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-method-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
}

.contact-method-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.contact-method-value {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Contact Form */
.contact-form {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 40px;
}

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

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(6, 10, 19, 0.5);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  transition: var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--accent-gradient);
  color: #fff;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
  box-shadow: 0 4px 20px rgba(79, 125, 245, 0.3);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79, 125, 245, 0.4);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-glass);
  padding: 48px 0 32px;
}

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

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1rem;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

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

/* =============================================
   REVEAL ANIMATIONS
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =============================================
   RESPONSIVE
   ============================================= */

/* Tablet */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 260px 1fr;
    gap: 48px;
  }

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

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

  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
  }

  /* Nav */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: rgba(12, 18, 32, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 8px;
    transition: var(--transition-base);
    border-left: 1px solid var(--border-glass);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-links {
    flex-direction: column;
    width: 100%;
  }

  .nav-links a {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 16px;
    width: 100%;
  }

  .nav-cta a {
    width: 100%;
    text-align: center;
    display: block !important;
  }

  /* Hero */
  .hero-title {
    letter-spacing: -1px;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .about-image-wrapper {
    max-width: 260px;
    margin: 0 auto;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Competencies */
  .competencies-grid {
    grid-template-columns: 1fr;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-card.featured {
    grid-column: auto;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }

  .section-header {
    margin-bottom: 48px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .contact-form {
    padding: 24px;
  }
}