/**
 * KISHAN SHARMA — PREMIUM PORTFOLIO
 * Design System & Layout
 */

/* =========================================
   CSS CUSTOM PROPERTIES
   ========================================= */
:root {
  /* Base */
  --bg-base: #08090B;
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-elevated: rgba(255, 255, 255, 0.05);

  /* Text */
  --text-primary: #F5F5F5;
  --text-secondary: #9297A1;
  --text-muted: #60656E;
  --text-dim: rgba(245, 245, 245, 0.35);

  /* Accent */
  --accent-cobalt: #3B82F6;
  --accent-cobalt-soft: rgba(59, 130, 246, 0.12);
  --accent-cobalt-glow: rgba(59, 130, 246, 0.25);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.12);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-xxl: 8rem;
  --space-hero: 10rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in: cubic-bezier(0.55, 0, 0.1, 1);
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* =========================================
   GLOBAL RESET
   ========================================= */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

::selection {
  background: var(--accent-cobalt-soft);
  color: var(--text-primary);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease-out);
}

ul, ol {
  list-style: none;
}

/* =========================================
   NAVIGATION
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 3vw;
  transition: background-color 0.4s var(--ease-out), backdrop-filter 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background-color: rgba(8, 9, 11, 0.75);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom-color: var(--border-subtle);
}

.nav-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand-text {
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.nav-links-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-cobalt);
  transition: width 0.35s var(--ease-out);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 0.55rem 1.1rem;
  border-radius: 100px;
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), transform 0.2s var(--ease-out);
}

.nav-cta:hover {
  background-color: var(--text-primary);
  color: var(--bg-base);
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem;
  z-index: 1002;
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: transform 0.35s var(--ease-out), opacity 0.3s var(--ease-out);
  border-radius: 1px;
}

/* =========================================
   HERO
   ========================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 9rem 3vw 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 80vh;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 6rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 640px;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-cobalt);
  text-transform: uppercase;
  margin-bottom: 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hero-eyebrow i {
  font-size: 1.2em;
  vertical-align: middle;
  color: var(--accent-cobalt);
}

.hero-headline {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(3.2rem, 6vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 1.75rem;
  text-shadow: 0 0 60px rgba(59, 130, 246, 0.15);
}

.hero-highlight {
  color: transparent;
  background: linear-gradient(135deg, #93C5FD 0%, var(--accent-cobalt) 60%, #3B82F6 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-body {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 2.5rem;
}

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

.hero-cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.25rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  background-color: var(--accent-cobalt);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 100px;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-elastic), box-shadow 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
  box-shadow: 0 4px 30px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
  background-color: #2563EB;
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(59, 130, 246, 0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  background-color: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 100px;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-medium);
  transition: background-color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), transform 0.2s var(--ease-out);
}

.btn-secondary:hover {
  background-color: var(--text-primary);
  color: var(--bg-base);
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.hero-status {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #22C55E;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.4);
  animation: pulse-dot 2.5s infinite;
}

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

.hero-image-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7), 0 0 0 1px var(--border-subtle);
}

.hero-portrait {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  filter: contrast(1.05) brightness(0.95);
  transition: transform 0.7s var(--ease-out);
}

.hero-image-wrapper:hover .hero-portrait {
  transform: scale(1.03);
}

.hero-image-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,9,11,0) 60%, rgba(8,9,11,0.4) 100%);
  pointer-events: none;
}

/* =========================================
   PROOF / STATS
   ========================================= */
.proof {
  padding: 4rem 3vw;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-base);
}

.proof-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.proof-item {
  padding: 2rem 1.5rem;
  border-right: 1px solid var(--border-subtle);
}

.proof-item:last-child {
  border-right: none;
}

.proof-number {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
}

.proof-number.proof-text {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

.proof-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.4;
}

/* =========================================
   SECTIONS SHARED
   ========================================= */
section {
  padding: 8rem 3vw;
  max-width: 1440px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 4rem;
}

.section-eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-cobalt);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text-primary);
}

/* =========================================
   EXPERTISE
   ========================================= */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.expertise-card {
  padding: 2.25rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out), transform 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.expertise-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  background-color: rgba(59, 130, 246, 0.04);
  transform: translateY(-6px);
  box-shadow: 0 0 40px rgba(59, 130, 246, 0.1);
}

.expertise-number {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 2.5rem;
  color: var(--accent-cobalt);
  line-height: 1;
  margin-bottom: 1rem;
  opacity: 0.6;
}

.expertise-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-cobalt-soft);
  color: var(--accent-cobalt);
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.expertise-title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  text-transform: uppercase;
}

.expertise-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.expertise-list li:last-child {
  border-bottom: none;
}

/* =========================================
   FEATURED WORK
   ========================================= */
.work-item {
  margin-bottom: 10rem;
}

.work-item:last-child {
  margin-bottom: 0;
}

.work-visual {
  display: block;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px var(--border-subtle);
  margin-bottom: 2.5rem;
}

.work-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out), filter 0.5s var(--ease-out);
  filter: contrast(1.05) brightness(0.92);
}

.work-visual:hover img {
  transform: scale(1.04);
  filter: contrast(1.1) brightness(1);
}

.work-visual-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(0deg, rgba(8,9,11,0.6) 0%, rgba(8,9,11,0.2) 50%, rgba(8,9,11,0) 100%);
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
}

.work-visual:hover .work-visual-overlay {
  opacity: 1;
}

.work-visual-overlay span {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.6rem 1.2rem;
  border-radius: 100px;
  backdrop-filter: blur(8px);
}

.work-info .work-meta {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-cobalt);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.work-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.work-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: 1.25rem;
}

.work-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.work-tags li {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.work-tags li:hover {
  border-color: var(--accent-cobalt);
  color: var(--text-primary);
}

/* =========================================
   PROCESS
   ========================================= */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.process-step {
  padding: 2rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out), transform 0.25s var(--ease-out);
}

.process-step:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-card-hover);
  transform: translateY(-3px);
}

.step-number {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--accent-cobalt);
  margin-bottom: 0.75rem;
}

.process-step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-cobalt-soft);
  color: var(--accent-cobalt);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.process-step h4 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* =========================================
   BEYOND THE INTERFACE
   ========================================= */
.beyond-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.beyond-col h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.beyond-col ul li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.beyond-col ul li:last-child {
  border-bottom: none;
}

/* =========================================
   SPEED
   ========================================= */
.speed {
  background: linear-gradient(180deg, var(--bg-base) 0%, rgba(59,130,246,0.04) 50%, var(--bg-base) 100%);
}

.speed-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
  align-items: start;
}

.speed-text h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 1.25rem;
  line-height: 1.1;
}

.speed-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 480px;
}

.speed-stats {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.speed-stat {
  padding: 1.5rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.speed-stat:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-card-hover);
}

.speed-number {
  display: block;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.75rem;
  letter-spacing: -0.04em;
  color: var(--accent-cobalt);
  margin-bottom: 0.35rem;
}

/* =========================================
   AI SECTION
   ========================================= */
.ai-section {
  background: linear-gradient(180deg, rgba(59,130,246,0.03) 0%, var(--bg-base) 40%, var(--bg-base) 60%, rgba(59,130,246,0.03) 100%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 6rem 3vw;
}

.ai-inner {
  max-width: 1440px;
  margin: 0 auto;
}

.ai-inner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.ai-inner > p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
  margin-bottom: 3rem;
}

.ai-flow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.ai-stage {
  padding: 0.9rem 1.4rem;
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
  white-space: nowrap;
}

.ai-stage:hover {
  border-color: var(--accent-cobalt);
  background-color: var(--accent-cobalt-soft);
}

.ai-arrow {
  color: var(--text-muted);
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1;
}

/* =========================================
   SKILLS
   ========================================= */
.skills-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.skills-group h3,
.beyond-col h3 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skills-group h3 i,
.beyond-col h3 i {
  color: var(--accent-cobalt);
  font-size: 1.1em;
  flex-shrink: 0;
}

.skills-group ul li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.35rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  transition: color 0.2s var(--ease-out);
}

.skills-group ul li:hover {
  color: var(--text-primary);
}

/* =========================================
   EXPERIENCE TIMELINE
   ========================================= */
.timeline {
  position: relative;
  max-width: 900px;
  padding-left: 2rem;
}

.timeline-line {
  position: absolute;
  left: 0.35rem;
  top: 0.25rem;
  bottom: 0.25rem;
  width: 1px;
  background: linear-gradient(180deg, transparent 0%, var(--border-medium) 15%, var(--border-medium) 85%, transparent 100%);
}

.timeline-item {
  position: relative;
  padding-bottom: 4rem;
  padding-left: 2rem;
}

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: -0.35rem;
  top: 0.25rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cobalt);
  box-shadow: 0 0 12px var(--accent-cobalt-glow);
  border: 2px solid var(--bg-base);
}

.timeline-date {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent-cobalt);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.timeline-company {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =========================================
   ABOUT
   ========================================= */
.about {
  background: linear-gradient(180deg, var(--bg-base) 0%, rgba(59,130,246,0.05) 50%, var(--bg-base) 100%);
}

.about-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-inner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.about-inner p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* =========================================
   CERTIFICATIONS
   ========================================= */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.cert-card {
  padding: 1.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out), transform 0.25s var(--ease-out);
}

.cert-card:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-card-hover);
  transform: translateY(-3px);
}

.cert-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.cert-source {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* =========================================
   SOCIAL
   ========================================= */
.social-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.social-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out), transform 0.25s var(--ease-out);
  text-align: center;
}

.social-card:hover {
  border-color: var(--accent-cobalt);
  background-color: var(--accent-cobalt-soft);
  transform: translateY(-4px);
}

.social-card i {
  font-size: 1.75rem;
  color: var(--accent-cobalt);
  transition: color 0.2s var(--ease-out);
}

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

.social-card span {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.2s var(--ease-out);
}

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

/* =========================================
   CONTACT
   ========================================= */
.contact {
  text-align: center;
  padding-top: 10rem;
  padding-bottom: 6rem;
}

.contact h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.contact h2 i {
  color: var(--accent-cobalt);
  font-size: 0.9em;
  vertical-align: middle;
  margin-right: 0.4rem;
}

.contact > p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.btn-large {
  padding: 1.1rem 2.2rem;
  font-size: 0.95rem;
}

.contact-details {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-details a {
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.1rem;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.contact-details a:hover {
  color: var(--text-primary);
  border-bottom-color: var(--accent-cobalt);
}

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  text-align: center;
  padding: 2.5rem 3vw;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* =========================================
   CURSOR GLOW
   ========================================= */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity 0.2s ease;
  opacity: 0.7;
}

/* =========================================
   MOBILE NAV OVERLAY
   ========================================= */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 9, 11, 0.92);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-out);
}

.mobile-nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
}

.mobile-nav-item {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  transition: color 0.2s var(--ease-out);
}

.mobile-nav-item:hover {
  color: var(--accent-cobalt);
}

.mobile-nav-footer {
  margin-top: 3rem;
}

.mobile-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--accent-cobalt);
  color: #fff;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
}

/* =========================================
   MAGNETIC BUTTON EFFECT
   ========================================= */
.magnetic-btn {
  transition: transform 0.15s ease-out;
}