/* ====================================================
   MANIKANDAN PORTFOLIO – PREMIUM CSS
   Syne + DM Sans | Dark Navy Glassmorphism
   ==================================================== */

/* ---- CSS Variables ---- */
:root {
  --bg-primary:   #050816;
  --bg-secondary: #0B1120;
  --bg-card:      rgba(255,255,255,0.04);
  --bg-card-hover:rgba(255,255,255,0.07);
  --clr-primary:  #4F46E5;
  --clr-secondary:#06B6D4;
  --clr-accent:   #8B5CF6;
  --clr-gradient: linear-gradient(135deg, #4F46E5, #06B6D4);
  --clr-text:     #FFFFFF;
  --clr-muted:    #CBD5E1;
  --clr-subtle:   rgba(255,255,255,0.35);
  --border-glass: rgba(255,255,255,0.08);
  --shadow-glow:  0 0 40px rgba(79,70,229,0.15);
  --radius-card:  18px;
  --radius-pill:  50px;
  --transition:   all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
}

[data-theme="light"] {
  --bg-primary:   #F8FAFF;
  --bg-secondary: #EEF2FF;
  --bg-card:      rgba(255,255,255,0.75);
  --bg-card-hover:rgba(255,255,255,0.9);
  --clr-text:     #0F172A;
  --clr-muted:    #475569;
  --clr-subtle:   rgba(15,23,42,0.4);
  --border-glass: rgba(79,70,229,0.12);
  --shadow-glow:  0 0 40px rgba(79,70,229,0.1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--clr-text);
  overflow-x: hidden;
  line-height: 1.7;
  transition: background 0.4s ease, color 0.3s ease;
}

/* ---- Particle Canvas ---- */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 10px; }

/* ---- Selection ---- */
::selection { background: var(--clr-primary); color: #fff; }

/* ==============================
   NAVBAR
   ============================== */
.glass-nav {
  background: rgba(5,8,22,0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  padding: 16px 0;
  transition: var(--transition);
  z-index: 1000;
}

[data-theme="light"] .glass-nav {
  background: rgba(248,250,255,0.75);
}

.glass-nav.scrolled {
  padding: 10px 0;
  background: rgba(5,8,22,0.85);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--clr-text) !important;
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--clr-gradient);
  border-radius: 10px;
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
}

.brand-text { color: var(--clr-text); }

.nav-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--clr-muted) !important;
  padding: 6px 14px !important;
  border-radius: 8px;
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.nav-link:hover, .nav-link.active {
  color: var(--clr-text) !important;
  background: rgba(79,70,229,0.12);
}

.theme-toggle {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  color: var(--clr-muted);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.theme-toggle:hover {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}

.custom-toggler {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.custom-toggler span {
  display: block;
  width: 24px; height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ==============================
   HERO
   ============================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-primary);
  z-index: 1;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  animation: floatOrb 8s ease-in-out infinite;
}

.orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #4F46E5, transparent);
  top: -100px; left: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #06B6D4, transparent);
  bottom: -100px; right: 10%;
  animation-delay: -3s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #8B5CF6, transparent);
  top: 40%; left: 50%;
  animation-delay: -6s;
}

@keyframes floatOrb {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-container { position: relative; z-index: 2; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(79,70,229,0.12);
  border: 1px solid rgba(79,70,229,0.3);
  color: var(--clr-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-dot {
  width: 7px; height: 7px;
  background: #10B981;
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.hero-greeting {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-muted);
  font-weight: 400;
  margin-bottom: 4px;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.name-gradient {
  background: linear-gradient(135deg, #FFFFFF 30%, #4F46E5 70%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-role {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--clr-secondary);
  font-weight: 500;
  margin-bottom: 20px;
  min-height: 1.8em;
}

.role-prefix { margin-right: 8px; opacity: 0.5; }

.cursor-blink {
  animation: blink 1s step-end infinite;
  font-weight: 300;
}

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

.hero-desc {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--clr-muted);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.btn-primary-hero {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  background: var(--clr-gradient);
  color: #fff !important;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(79,70,229,0.4);
}

.btn-primary-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(79,70,229,0.5);
  color: #fff !important;
}

.btn-outline-hero {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  background: transparent;
  color: var(--clr-text) !important;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 0.92rem;
  text-decoration: none;
  border: 1px solid var(--border-glass);
  transition: var(--transition);
}

.btn-outline-hero:hover {
  background: var(--bg-card-hover);
  border-color: var(--clr-primary);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  gap: 12px;
}

.social-pill {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  color: var(--clr-muted);
  text-decoration: none;
  transition: var(--transition);
  font-size: 1.1rem;
}

.social-pill:hover {
  background: var(--clr-gradient);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
}

/* Hero Visual */
.hero-visual-col { position: relative; }

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.avatar-ring {
  width: 240px; height: 240px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #4F46E5, #06B6D4, #8B5CF6, #4F46E5);
  padding: 3px;
  animation: spin 8s linear infinite;
  position: relative;
}

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.avatar-inner {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: var(--bg-primary);
  display: flex; align-items: center; justify-content: center;
}

.avatar-initials {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tech-badge {
  position: absolute;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  padding: 7px 16px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--clr-text);
  white-space: nowrap;
  animation: floatBadge 4s ease-in-out infinite;
  display: flex; align-items: center; gap: 6px;
}

.badge-1 { top: 8%; right: 5%; animation-delay: 0s; color: #F0DB4F; }
.badge-2 { top: 30%; left: -5%; animation-delay: -1s; color: #CC2927; }
.badge-3 { bottom: 30%; right: -5%; animation-delay: -2s; color: #264DE4; }
.badge-4 { bottom: 10%; left: 5%; animation-delay: -3s; color: #F05032; }
.badge-5 { top: 60%; right: 2%; animation-delay: -1.5s; color: #8B5CF6; }

@keyframes floatBadge {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--clr-subtle);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  z-index: 2;
}

.scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, var(--clr-primary), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ==============================
   SHARED SECTION STYLES
   ============================== */
.section-pad {
  padding: clamp(70px, 10vw, 110px) 0;
  position: relative;
  z-index: 1;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 10px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--clr-secondary);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.25);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

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

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: var(--transition);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(79,70,229,0.25);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

/* ==============================
   ABOUT
   ============================== */
.about-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.about-avatar {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--clr-gradient);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: #fff;
}

.divider {
  border-color: var(--border-glass);
  margin: 16px 0;
}

.about-info-list { display: flex; flex-direction: column; gap: 12px; }

.info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--clr-muted);
}

.info-item i {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(79,70,229,0.12);
  border-radius: 8px;
  color: var(--clr-primary);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.text-muted-custom { color: var(--clr-muted); font-size: 0.85rem; }

.about-text {
  color: var(--clr-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-text strong { color: var(--clr-text); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.stat-card {
  text-align: center;
  padding: 20px 16px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 800;
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 6px;
}

/* ==============================
   EXPERIENCE TIMELINE
   ============================== */
.timeline { position: relative; padding-left: 32px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-primary), transparent);
  border-radius: 2px;
}

.timeline-item { position: relative; margin-bottom: 40px; }

.timeline-dot {
  position: absolute;
  left: -39px;
  top: 24px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--clr-primary);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.3);
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

.company-badge {
  display: flex;
  align-items: center;
  gap: 14px;
}

.company-logo-ph {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--clr-gradient);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: #fff;
  flex-shrink: 0;
}

.job-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 2px;
}

.company-name { color: var(--clr-secondary); font-size: 0.88rem; }

.job-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.job-location, .job-period {
  font-size: 0.8rem;
  color: var(--clr-muted);
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}

.responsibility-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 10px;
}

.resp-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--clr-muted);
}

.resp-item i {
  color: var(--clr-secondary);
  margin-top: 3px;
  flex-shrink: 0;
}

/* ==============================
   SKILLS
   ============================== */
.skills-tabs { }

.skills-tab-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 36px;
}

.skills-tab-btn {
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  color: var(--clr-muted);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.skills-tab-btn:hover { color: var(--clr-text); border-color: var(--clr-primary); }

.skills-tab-btn.active {
  background: var(--clr-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(79,70,229,0.35);
}

.skills-tab-content { display: none; }
.skills-tab-content.active { display: block; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.skill-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 14px;
  padding: 18px 20px;
  transition: var(--transition);
}

.skill-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(79,70,229,0.25);
  transform: translateY(-2px);
}

.skill-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.skill-icon-wrap {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr);
  font-size: 1rem;
  flex-shrink: 0;
}

.skill-name { font-weight: 500; font-size: 0.9rem; flex: 1; }

.skill-pct {
  font-size: 0.8rem;
  color: var(--clr-secondary);
  font-weight: 600;
}

.skill-bar {
  height: 5px;
  background: rgba(255,255,255,0.07);
  border-radius: 5px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr));
  border-radius: 5px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================
   PROJECTS
   ============================== */
.project-card {
  padding: 0;
  overflow: hidden;
  position: relative;
}

.project-img-wrap {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.project-img-ph {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.project-icon {
  font-size: 3.5rem;
  color: rgba(255,255,255,0.3);
  transition: var(--transition);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5,8,22,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: var(--transition);
  backdrop-filter: blur(6px);
}

.project-card:hover .project-overlay { opacity: 1; }
.project-card:hover .project-icon { transform: scale(1.1); opacity: 0.15; }

.proj-btn {
  padding: 8px 18px;
  background: var(--clr-gradient);
  color: #fff !important;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.proj-btn:hover { transform: translateY(-2px); }

.proj-btn-ghost {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
}

.project-body { padding: 24px; }

.project-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.project-desc {
  color: var(--clr-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.project-features {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.project-features span {
  font-size: 0.82rem;
  color: var(--clr-muted);
  display: flex;
  align-items: center;
  gap: 7px;
}

.project-features i {
  color: var(--clr-secondary);
  font-size: 0.75rem;
}

/* Tech Tags */
.tech-tags { display: flex; flex-wrap: wrap; gap: 6px; }

.tech-tag {
  font-size: 0.74rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(79,70,229,0.12);
  border: 1px solid rgba(79,70,229,0.2);
  color: var(--clr-secondary);
}

/* ==============================
   EDUCATION TIMELINE
   ============================== */
.edu-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 700px;
  margin: 0 auto;
}

.edu-item {
  display: flex;
  gap: 24px;
}

.edu-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  padding-top: 28px;
}

.edu-dot {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--clr-gradient);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.3);
  flex-shrink: 0;
}

.edu-line {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, var(--clr-primary), rgba(79,70,229,0.1));
  margin-top: 8px;
  min-height: 40px;
}

.edu-card {
  flex: 1;
  margin-bottom: 32px;
}

.edu-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: rgba(79,70,229,0.12);
  color: var(--clr, var(--clr-primary));
  border: 1px solid rgba(79,70,229,0.2);
  margin-bottom: 12px;
}

.edu-degree {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.edu-institution {
  color: var(--clr-secondary);
  font-size: 0.88rem;
  margin-bottom: 6px;
}

.edu-period {
  font-size: 0.8rem;
  color: var(--clr-muted);
  margin-bottom: 12px;
}

.edu-desc {
  font-size: 0.88rem;
  color: var(--clr-muted);
  line-height: 1.7;
}

/* ==============================
   CONTACT
   ============================== */
.contact-info { height: 100%; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(79,70,229,0.12);
  border: 1px solid rgba(79,70,229,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-primary);
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-muted);
  display: block;
  margin-bottom: 2px;
}

.contact-item p, .contact-item a {
  font-size: 0.9rem;
  color: var(--clr-text);
  text-decoration: none;
  margin: 0;
  word-break: break-word;
}

.contact-item a:hover { color: var(--clr-secondary); }

.contact-socials {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-social-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--clr-muted) !important;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border-glass);
  background: var(--bg-card);
  transition: var(--transition);
}

.contact-social-link:hover {
  background: var(--clr-gradient);
  color: #fff !important;
  border-color: transparent;
}

.contact-social-link i { font-size: 1.1rem; }

/* Form */
.contact-form-wrap { }

.form-group-custom {
  position: relative;
  margin-bottom: 8px;
}

.form-group-custom label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-input-custom {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: var(--transition);
  outline: none;
  resize: vertical;
}

.form-input-custom::placeholder { color: var(--clr-subtle); }

.form-input-custom:focus {
  border-color: var(--clr-primary);
  background: rgba(79,70,229,0.06);
  box-shadow: 0 0 0 3px rgba(79,70,229,0.12);
}

.form-input-custom.error { border-color: #EF4444 !important; }

/* ==============================
   FOOTER
   ============================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
  padding: 48px 0 0;
  position: relative;
  z-index: 1;
}

.footer-desc {
  font-size: 0.85rem;
  color: var(--clr-muted);
  max-width: 220px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.footer-links a {
  color: var(--clr-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
}

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

.footer-socials {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.footer-socials a {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-socials a:hover {
  background: var(--clr-gradient);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  margin-top: 32px;
  border-top: 1px solid var(--border-glass);
  font-size: 0.82rem;
  color: var(--clr-muted);
}

.footer-bottom .text-accent { -webkit-text-fill-color: #8B5CF6; }

/* ==============================
   BACK TO TOP
   ============================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--clr-gradient);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(79,70,229,0.4);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover { transform: translateY(-3px); }

/* ==============================
   TOAST
   ============================== */
.toast-msg {
  position: fixed;
  bottom: 90px;
  right: 30px;
  background: linear-gradient(135deg, #10B981, #059669);
  color: #fff;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
  z-index: 9999;
  box-shadow: 0 8px 30px rgba(16,185,129,0.35);
}

.toast-msg.show { transform: translateX(0); }

/* ======================================================
   RESPONSIVE — full mobile-first overhaul
   Breakpoints: 991 (tablet-landscape) | 768 (tablet) |
                575 (large phone) | 400 (small phone)
   ====================================================== */

/* ---------- ≤ 991px  (tablets / collapsed navbar) ---------- */
@media (max-width: 991px) {

  /* --- Navbar --- */
  .navbar-collapse {
    background: rgba(5,8,22,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    margin-top: 12px;
    padding: 16px 20px;
  }
  [data-theme="light"] .navbar-collapse {
    background: rgba(248,250,255,0.97);
  }
  .navbar-nav { gap: 4px !important; }
  .nav-link { padding: 10px 14px !important; border-radius: 10px; }

  /* --- Hero --- */
  .hero-section { padding-top: 100px; }
  .hero-text-col { text-align: center; }
  .hero-tag { margin-left: auto; margin-right: auto; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-socials { justify-content: center; }
  .hero-visual-col { margin-top: 48px; }
  .hero-visual { min-height: 260px; }
  .avatar-ring { width: 190px; height: 190px; }
  .avatar-initials { font-size: 2.6rem; }

  /* --- About --- */
  .job-meta { align-items: flex-start; flex-direction: column; gap: 6px; }

  /* --- Footer --- */
  .footer-socials { justify-content: flex-start; }
  .site-footer .col-md-4:last-child { text-align: left !important; }
}

/* ---------- ≤ 768px  (tablet portrait) ---------- */
@media (max-width: 768px) {

  /* --- Global --- */
  .section-pad { padding: 60px 0; }

  /* --- Hero --- */
  .hero-section { min-height: auto; padding-bottom: 60px; }
  .hero-name { font-size: clamp(2.6rem, 11vw, 4rem); }
  .hero-role { font-size: 1rem; }
  .hero-desc { font-size: 0.95rem; max-width: 100%; }
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .btn-primary-hero,
  .btn-outline-hero {
    width: 100%;
    max-width: 320px;
    justify-content: center;
    text-align: center;
  }
  .scroll-indicator { display: none; }

  /* --- About --- */
  .about-card { margin-bottom: 8px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 16px 12px; }
  .stat-number { font-size: 1.8rem; }
  .about-text { font-size: 0.95rem; }

  /* --- Experience --- */
  .timeline { padding-left: 18px; }
  .timeline-dot { left: -27px; width: 12px; height: 12px; top: 20px; }
  .timeline-header { flex-direction: column; gap: 10px; }
  .job-meta { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .responsibility-grid { grid-template-columns: 1fr; gap: 8px; }
  .resp-item { font-size: 0.85rem; }

  /* --- Skills --- */
  .skills-tab-buttons { gap: 6px; }
  .skills-tab-btn { padding: 7px 16px; font-size: 0.82rem; }
  .skills-grid { grid-template-columns: 1fr; gap: 12px; }

  /* --- Projects --- */
  .project-img-wrap { height: 170px; }
  .project-body { padding: 18px; }

  /* --- Education --- */
  .edu-timeline { padding: 0 4px; }
  .edu-item { gap: 16px; }
  .edu-card { padding: 20px 18px; }
  .edu-degree { font-size: 1rem; }

  /* --- Contact --- */
  .contact-info { margin-bottom: 8px; }
  .contact-form-wrap { padding: 22px 18px; }
  .form-input-custom { padding: 11px 14px; font-size: 0.9rem; }

  /* --- Footer --- */
  .footer-links { gap: 14px; justify-content: flex-start; }
  .footer-socials { margin-top: 4px; }
  .footer-bottom { font-size: 0.78rem; }

  /* --- Back to Top / Toast --- */
  .back-to-top { bottom: 20px; right: 16px; width: 40px; height: 40px; }
  .toast-msg { right: 12px; left: 12px; bottom: 72px; font-size: 0.85rem; }
}

/* ---------- ≤ 575px  (large phones) ---------- */
@media (max-width: 575px) {

  /* --- Navbar --- */
  .brand-logo { font-size: 1.2rem; }
  .brand-icon { width: 30px; height: 30px; font-size: 0.95rem; }

  /* --- Hero --- */
  .hero-section { padding-top: 90px; padding-bottom: 40px; }
  .hero-greeting { font-size: 0.9rem; }
  .hero-name { font-size: clamp(2.2rem, 13vw, 3.2rem); letter-spacing: -0.03em; }
  .hero-tag { font-size: 0.72rem; padding: 5px 13px; }
  .hero-role { font-size: 0.93rem; }
  .hero-desc { font-size: 0.88rem; line-height: 1.75; }
  .social-pill { width: 40px; height: 40px; border-radius: 10px; font-size: 1rem; }
  .tech-badge { display: none; }          /* hide floating badges on small screens */

  /* --- Avatar --- */
  .hero-visual { min-height: 200px; }
  .avatar-ring { width: 150px; height: 150px; }
  .avatar-initials { font-size: 2rem; }

  /* --- Section titles --- */
  .section-title { font-size: clamp(1.7rem, 8vw, 2.2rem); }
  .section-tag { font-size: 0.7rem; }

  /* --- About card --- */
  .about-card-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .about-avatar { width: 48px; height: 48px; }
  .info-item { font-size: 0.83rem; word-break: break-word; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-number { font-size: 1.6rem; }
  .stat-label { font-size: 0.72rem; }

  /* --- Experience --- */
  .timeline { padding-left: 14px; }
  .timeline::before { left: 4px; }
  .timeline-dot { left: -20px; }
  .company-badge { flex-direction: column; align-items: flex-start; gap: 10px; }
  .company-logo-ph { width: 40px; height: 40px; font-size: 1.1rem; border-radius: 10px; }
  .job-title { font-size: 1rem; }
  .tech-tags { gap: 5px; }
  .tech-tag { font-size: 0.7rem; padding: 2px 9px; }

  /* --- Skills tabs --- */
  .skills-tab-buttons { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 6px; }
  .skills-tab-buttons::-webkit-scrollbar { height: 3px; }
  .skills-tab-btn { white-space: nowrap; flex-shrink: 0; padding: 6px 14px; font-size: 0.8rem; }

  /* --- Projects --- */
  .project-img-wrap { height: 150px; }
  .project-icon { font-size: 2.8rem; }
  .proj-btn { padding: 7px 14px; font-size: 0.78rem; }
  .project-title { font-size: 1rem; }
  .project-desc { font-size: 0.84rem; }
  .project-features span { font-size: 0.8rem; }

  /* --- Education --- */
  .edu-item { gap: 12px; }
  .edu-marker { padding-top: 22px; }
  .edu-dot { width: 14px; height: 14px; }
  .edu-badge { font-size: 0.68rem; padding: 2px 10px; }
  .edu-degree { font-size: 0.95rem; }
  .edu-institution { font-size: 0.83rem; }
  .edu-period { font-size: 0.78rem; }
  .edu-desc { font-size: 0.84rem; }

  /* --- Contact --- */
  .contact-item { gap: 12px; }
  .contact-icon { width: 38px; height: 38px; border-radius: 10px; font-size: 0.9rem; }
  .contact-label { font-size: 0.7rem; }
  .contact-item p, .contact-item a { font-size: 0.85rem; }
  .contact-social-link { font-size: 0.85rem; padding: 9px 14px; }
  .contact-socials { gap: 10px; }

  /* --- Footer --- */
  .footer-desc { font-size: 0.82rem; }
  .footer-links { flex-direction: row; flex-wrap: wrap; gap: 12px; }
  .footer-links a { font-size: 0.83rem; }
  .footer-socials a { width: 34px; height: 34px; font-size: 0.85rem; }
  .site-footer { padding-top: 36px; }

  /* --- Glass card padding --- */
  .glass-card { padding: 20px 16px; }
}

/* ---------- ≤ 400px  (small phones: SE, Galaxy A-series) ---------- */
@media (max-width: 400px) {

  .hero-name { font-size: clamp(1.9rem, 14vw, 2.8rem); }
  .hero-actions { gap: 10px; }
  .btn-primary-hero,
  .btn-outline-hero { padding: 11px 20px; font-size: 0.85rem; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat-card { padding: 14px 10px; }

  .section-title { font-size: clamp(1.5rem, 10vw, 2rem); }

  .avatar-ring { width: 130px; height: 130px; }
  .avatar-initials { font-size: 1.7rem; }

  .skills-tab-btn { padding: 6px 12px; font-size: 0.76rem; }

  .edu-item { gap: 8px; }
  .edu-card { padding: 16px 14px; }

  .glass-card { padding: 16px 14px; border-radius: 14px; }

  .timeline-card { padding: 18px 14px; }
  .project-body { padding: 14px; }

  .contact-form-wrap { padding: 18px 14px; }
  .contact-item a { font-size: 0.8rem; }

  .back-to-top { width: 36px; height: 36px; font-size: 0.85rem; }
}

/* ==============================
   LIGHT MODE OVERRIDES
   ============================== */
[data-theme="light"] .glass-nav {
  border-bottom: 1px solid rgba(79,70,229,0.1);
}

[data-theme="light"] .hero-section {
  background: var(--bg-primary);
}

[data-theme="light"] .section-alt {
  background: #EEF2FF;
}

[data-theme="light"] .form-input-custom {
  background: rgba(255,255,255,0.8);
  color: #0F172A;
}

[data-theme="light"] .avatar-inner {
  background: var(--bg-primary);
}

[data-theme="light"] .timeline-dot {
  border-color: var(--bg-secondary);
}

[data-theme="light"] .edu-dot {
  border-color: var(--bg-secondary);
}

[data-theme="light"] #particleCanvas { opacity: 0.15; }

/* ==============================
   UTILITY
   ============================== */
.d-none-custom { display: none !important; }