/* ============================================
   NITHISH G — PORTFOLIO STYLESHEET
   Theme: Dark Techy · Glassmorphism · Cloud
   Font: Syne + DM Mono + DM Sans
   ============================================ */

/* === CSS VARIABLES === */
:root {
  --bg-deep:     #060a14;
  --bg-dark:     #0b1120;
  --bg-card:     rgba(255,255,255,0.03);
  --bg-glass:    rgba(255,255,255,0.06);
  --border:      rgba(99,179,237,0.15);
  --border-glow: rgba(99,179,237,0.4);

  --blue-1:  #63b3ed;
  --blue-2:  #4299e1;
  --blue-3:  #2b6cb0;
  --cyan:    #76e4f7;
  --purple:  #9f7aea;
  --accent:  #63b3ed;

  --text-primary:   #f0f6ff;
  --text-secondary: #8fa7c4;
  --text-muted:     #4a6080;

  --font-display: 'Syne', sans-serif;
  --font-mono:    'DM Mono', monospace;
  --font-body:    'DM Sans', sans-serif;

  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-glow: 0 0 40px rgba(99,179,237,0.12);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --radius: 16px;
  --radius-sm: 10px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }
input, textarea, button { font-family: inherit; }

/* === SELECTION === */
::selection { background: rgba(99,179,237,0.3); color: var(--text-primary); }

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--blue-3); border-radius: 3px; }

/* ============================================
   LOADER
   ============================================ */
#loader {
  position: fixed;
  inset: 0;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; }

.loader-inner { display: flex; flex-direction: column; align-items: center; gap: 18px; }

.loader-ring {
  width: 60px; height: 60px;
  border: 3px solid rgba(99,179,237,0.2);
  border-top-color: var(--blue-1);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loader-text {
  font-family: var(--font-mono);
  color: var(--blue-1);
  font-size: 0.85rem;
  letter-spacing: 2px;
}

.dots { animation: blink 1s step-start infinite; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* ============================================
   NAVBAR
   ============================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(6,10,20,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1px;
}
.logo-dot { color: var(--blue-1); }

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
  letter-spacing: 0.5px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--blue-1);
  background: rgba(99,179,237,0.1);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 100px 24px 60px;
}

/* Background layers */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,179,237,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,179,237,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Glowing orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
}
.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #2b6cb0, transparent);
  top: -100px; left: -100px;
  animation: float 8s ease-in-out infinite;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #6b46c1, transparent);
  bottom: -80px; right: -80px;
  animation: float 10s ease-in-out infinite reverse;
}
.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #0bc5ea, transparent);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  animation: pulse-glow 5s ease-in-out infinite;
}

@keyframes float {
  0%,100% { transform: translate(0,0); }
  50%      { transform: translate(30px, -30px); }
}
@keyframes pulse-glow {
  0%,100% { opacity: 0.2; transform: translate(-50%,-50%) scale(1); }
  50%      { opacity: 0.4; transform: translate(-50%,-50%) scale(1.15); }
}

/* Floating icons */
.float-icon {
  position: absolute;
  font-size: 1.5rem;
  color: rgba(99,179,237,0.2);
  animation: floatIcon 6s ease-in-out infinite;
}
.float-icon:nth-child(even)  { animation-direction: reverse; animation-duration: 8s; }
.float-icon:nth-child(3n)    { animation-duration: 10s; }

@keyframes floatIcon {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-20px); }
}

/* Hero content */
.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 64px;
  max-width: 1100px;
  width: 100%;
  flex-wrap: wrap;
  justify-content: center;
}

/* Profile image */
.profile-wrap {
  position: relative;
  flex-shrink: 0;
}

.profile-img {
  width: 200px; height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bg-glass), rgba(99,179,237,0.12));
  border: 2px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: var(--blue-1);
  position: relative;
  z-index: 2;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 40px rgba(99,179,237,0.2), inset 0 0 40px rgba(99,179,237,0.05);
}
.profile-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.profile-ring {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 2px dashed rgba(99,179,237,0.3);
  animation: spin 20s linear infinite;
}

.profile-badge {
  position: absolute;
  bottom: 10px; right: -10px;
  background: linear-gradient(135deg, var(--blue-2), var(--purple));
  color: white;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  padding: 6px 14px;
  border-radius: 20px;
  letter-spacing: 1px;
  z-index: 3;
  box-shadow: 0 4px 20px rgba(99,179,237,0.4);
}
.profile-badge i { margin-right: 4px; }

/* Hero text */
.hero-text { flex: 1; min-width: 300px; }

.hero-greeting {
  font-family: var(--font-mono);
  color: var(--blue-1);
  font-size: 0.95rem;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  background: linear-gradient(135deg, #f0f6ff 30%, var(--blue-1));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
}

.hero-roles {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 4px;
}

.typed-text { color: var(--cyan); }
.cursor {
  color: var(--blue-1);
  animation: blink 0.8s step-start infinite;
}

.hero-tagline {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 480px;
  margin-bottom: 30px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-2), var(--blue-3));
  color: white;
  box-shadow: 0 4px 20px rgba(66,153,225,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(66,153,225,0.5);
}

.btn-outline {
  background: transparent;
  color: var(--blue-1);
  border: 1px solid var(--border-glow);
}
.btn-outline:hover {
  background: rgba(99,179,237,0.1);
  transform: translateY(-2px);
  border-color: var(--blue-1);
}

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

/* Hero socials */
.hero-socials { display: flex; gap: 14px; }
.hero-socials a {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}
.hero-socials a:hover {
  color: var(--blue-1);
  border-color: var(--border-glow);
  background: rgba(99,179,237,0.1);
  transform: translateY(-3px);
}

/* Scroll indicator */
.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  animation: bounce 2s ease-in-out infinite;
  z-index: 2;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   STATS STRIP
   ============================================ */
.stats-strip {
  padding: 40px 24px;
  background: linear-gradient(135deg, rgba(99,179,237,0.06), rgba(159,122,234,0.06));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 24px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}
.stat-item span { /* number */
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--blue-1);
}
.stat-item p {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 2px;
}

.stat-num-divider {
  width: 1px; height: 50px;
  background: var(--border);
}

/* ============================================
   SECTION COMMON
   ============================================ */
.section { padding: 100px 24px; }

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--blue-1);
  letter-spacing: 2px;
  display: block;
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-primary);
}

.accent { color: var(--blue-1); }

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section { background: var(--bg-dark); }

.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 40px;
  align-items: start;
}

.about-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(16px);
  text-align: center;
}

.about-avatar {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(99,179,237,0.15), rgba(159,122,234,0.15));
  border: 2px solid var(--border-glow);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  color: var(--blue-1);
  margin: 0 auto 24px;
}

.about-info-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  margin-bottom: 20px;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.info-item i { color: var(--blue-1); width: 16px; }

.about-langs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 14px; }
.lang-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 5px 14px;
  border-radius: 20px;
  background: rgba(99,179,237,0.1);
  border: 1px solid var(--border);
  color: var(--blue-1);
}

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

.about-objective, .about-me-text {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(10px);
}

.about-objective h3,
.about-me-text h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--blue-1);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-objective p,
.about-me-text p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
}

.strengths-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.strength-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: linear-gradient(135deg, rgba(99,179,237,0.1), rgba(159,122,234,0.1));
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  transition: var(--transition);
  cursor: default;
}
.strength-chip i { color: var(--blue-1); }
.strength-chip:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills-section { background: var(--bg-deep); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  cursor: default;
}

.skill-card:hover {
  border-color: var(--border-glow);
  background: rgba(99,179,237,0.08);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.skill-icon {
  font-size: 2rem;
  color: var(--blue-1);
  margin-bottom: 12px;
}

.skill-card span {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.skill-bar {
  height: 4px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--blue-2), var(--cyan));
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects-section { background: var(--bg-dark); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: var(--transition);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-2), var(--purple));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.project-card:hover::before { transform: scaleX(1); }
.project-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-8px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

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

.project-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(99,179,237,0.2), rgba(159,122,234,0.2));
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  color: var(--blue-1);
}

.project-links { display: flex; gap: 10px; }
.project-links a {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: var(--transition);
}
.project-links a:hover { color: var(--blue-1); }

.project-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.project-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  background: rgba(118,228,247,0.1);
  border: 1px solid rgba(118,228,247,0.2);
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.8;
  flex: 1;
}

.project-tech {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}
.project-tech i { color: var(--blue-1); }

/* ============================================
   EDUCATION SECTION
   ============================================ */
.education-section { background: var(--bg-deep); }

.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute;
  left: 28px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-2), transparent);
}

.timeline-item {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding-left: 0;
}

.timeline-dot {
  width: 56px; height: 56px;
  min-width: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-2), var(--blue-3));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  color: white;
  box-shadow: 0 0 24px rgba(66,153,225,0.4);
  position: relative;
  z-index: 1;
}

.timeline-card {
  flex: 1;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}
.timeline-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.timeline-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--blue-1);
  background: rgba(99,179,237,0.1);
  padding: 4px 12px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.timeline-cgpa {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  background: rgba(118,228,247,0.1);
  padding: 4px 12px;
  border-radius: 4px;
  border: 1px solid rgba(118,228,247,0.2);
}

.timeline-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.timeline-college,
.timeline-location {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.timeline-college i,
.timeline-location i { color: var(--blue-1); }

.timeline-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.timeline-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ============================================
   CERTIFICATIONS SECTION
   ============================================ */
.certs-section { background: var(--bg-dark); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.cert-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.cert-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(99,179,237,0.06), transparent 70%);
  pointer-events: none;
}

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

.cert-icon {
  font-size: 2.5rem;
  color: var(--blue-1);
  margin-bottom: 16px;
}

.cert-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #68d391;
  background: rgba(104,211,145,0.1);
  border: 1px solid rgba(104,211,145,0.3);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.cert-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.cert-card p {
  font-size: 0.88rem;
  color: var(--blue-1);
  font-family: var(--font-mono);
}

.cert-line {
  width: 40px; height: 2px;
  background: linear-gradient(90deg, var(--blue-2), var(--purple));
  margin: 16px auto;
  border-radius: 1px;
}

.cert-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section { background: var(--bg-deep); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}
.contact-info > p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 28px;
}

.contact-cards { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  backdrop-filter: blur(8px);
}
.contact-card:hover {
  border-color: var(--border-glow);
  background: rgba(99,179,237,0.08);
}
.contact-card > i {
  font-size: 1.2rem;
  color: var(--blue-1);
  width: 40px; height: 40px;
  background: rgba(99,179,237,0.1);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.contact-card div span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
}
.contact-card div p {
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-top: 2px;
}

.contact-socials { display: flex; gap: 12px; }
.contact-socials a {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: var(--transition);
}
.contact-socials a:hover {
  color: var(--blue-1);
  border-color: var(--border-glow);
  transform: translateY(-3px);
}

/* Contact form */
.contact-form {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.form-group input,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 13px 16px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
  resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-1);
  background: rgba(99,179,237,0.06);
  box-shadow: 0 0 0 3px rgba(99,179,237,0.1);
}

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

.form-success {
  display: none;
  color: #68d391;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  text-align: center;
  padding: 12px;
  background: rgba(104,211,145,0.1);
  border: 1px solid rgba(104,211,145,0.3);
  border-radius: 8px;
}
.form-success.show { display: flex; align-items: center; justify-content: center; gap: 8px; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 48px 24px 28px;
}

.footer-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 6px;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--blue-1); background: rgba(99,179,237,0.08); }

.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: var(--transition);
}
.footer-socials a:hover { color: var(--blue-1); border-color: var(--border-glow); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-copy i { color: #fc8181; margin: 0 2px; }
.footer-copy .fa-python { color: var(--blue-1); }

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-2), var(--blue-3));
  color: white;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(66,153,225,0.4);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(66,153,225,0.5); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-content { gap: 36px; }
  .profile-img { width: 160px; height: 160px; font-size: 3.5rem; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(6,10,20,0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
    z-index: 999;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-link { font-size: 1.1rem; padding: 14px 28px; }
  .hamburger { display: flex; z-index: 1000; }

  .hero { padding: 90px 20px 60px; }
  .hero-content { flex-direction: column; text-align: center; gap: 28px; }
  .hero-roles { justify-content: center; }
  .hero-tagline { margin: 0 auto 24px; }
  .hero-actions { justify-content: center; }
  .hero-socials { justify-content: center; }
  .profile-wrap { order: -1; }

  .section { padding: 70px 20px; }
  .skills-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .projects-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .stat-num-divider { display: none; }

  .timeline::before { display: none; }
  .timeline-item { flex-direction: column; }
  .timeline-dot { align-self: flex-start; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2.4rem; }
  .profile-img { width: 130px; height: 130px; font-size: 3rem; }
  .contact-form { padding: 24px 20px; }
  .back-to-top { bottom: 20px; right: 20px; }
}