/* ============================================================
   AFSAN HABIB PORTFOLIO — style.css
   Premium Dark Portfolio | Data Engineer & Django Developer
   ============================================================ */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* Colors */
  --bg-primary:    #0F172A;
  --bg-secondary:  #111827;
  --bg-card:       #1E293B;
  --bg-card-hover: #243044;
  --accent-cyan:   #38BDF8;
  --accent-teal:   #06B6D4;
  --accent-purple: #8B5CF6;
  --text-primary:  #F8FAFC;
  --text-secondary:#CBD5E1;
  --text-muted:    #64748B;
  --border:        rgba(56,189,248,0.15);
  --border-hover:  rgba(56,189,248,0.4);
  --glow-cyan:     rgba(56,189,248,0.15);
  --glow-purple:   rgba(139,92,246,0.15);

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'Outfit', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Spacing */
  --section-pad:  7rem 0;
  --container:    1200px;

  /* Radius */
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;

  /* Transitions */
  --trans-fast:   0.2s ease;
  --trans-base:   0.35s ease;
  --trans-slow:   0.6s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none; /* custom cursor */
}

@media (pointer: coarse) {
  body { cursor: auto; }
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--font-body);
}

ul { list-style: none; }

/* ===== CUSTOM CURSOR ===== */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
}

.cursor-dot {
  width: 6px; height: 6px;
  background: var(--accent-cyan);
  transition: transform 0.1s ease, opacity 0.3s ease;
}

.cursor-ring {
  width: 32px; height: 32px;
  border: 1.5px solid rgba(56,189,248,0.5);
  transition: transform 0.15s ease, width 0.2s ease, height 0.2s ease, opacity 0.3s ease;
}

body:hover .cursor-dot,
body:hover .cursor-ring { opacity: 1; }

/* ===== CONTAINER ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== SECTION BASE ===== */
.section { padding: var(--section-pad); }

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

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(56,189,248,0.08);
  border: 1px solid rgba(56,189,248,0.2);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  transition: transform var(--trans-base), box-shadow var(--trans-base), opacity var(--trans-fast);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  opacity: 0;
  transition: opacity var(--trans-base);
}

.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(56,189,248,0.25); }
.btn-primary span, .btn-primary svg { position: relative; z-index: 1; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-md);
  transition: all var(--trans-base);
}

.btn-secondary:hover {
  background: rgba(56,189,248,0.08);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: background var(--trans-base), padding var(--trans-base), box-shadow var(--trans-base);
}

.navbar.scrolled {
  background: rgba(15,23,42,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.85rem 0;
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  display: flex;
  gap: 0.1em;
}

.logo-bracket { color: var(--accent-cyan); }
.logo-name    { color: var(--text-primary); }
.logo-accent  { color: var(--accent-purple); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: color var(--trans-fast), background var(--trans-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-cyan);
  background: rgba(56,189,248,0.07);
}

.btn-hire {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: transform var(--trans-fast), box-shadow var(--trans-fast);
  margin-left: 0.5rem;
}

.btn-hire:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(56,189,248,0.3);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.4rem;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--trans-base), opacity var(--trans-base);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 1.5rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* Animated grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 40%, transparent 100%);
}

/* Glowing orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
  animation: orbFloat 8s ease-in-out infinite;
}

.orb-1 {
  width: 600px; height: 600px;
  background: var(--accent-cyan);
  top: -200px; right: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 400px; height: 400px;
  background: var(--accent-purple);
  bottom: -100px; left: -50px;
  animation-delay: -3s;
}
.orb-3 {
  width: 300px; height: 300px;
  background: var(--accent-teal);
  top: 50%; left: 40%;
  animation-delay: -5s;
  opacity: 0.1;
}

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

.hero-container {
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Hero Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-cyan);
  background: rgba(56,189,248,0.08);
  border: 1px solid rgba(56,189,248,0.25);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 8px; height: 8px;
  background: #22C55E;
  border-radius: 50%;
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0.6); }
  50% { box-shadow: 0 0 0 6px rgba(34,197,94,0); }
}

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* Typing animation */
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  min-height: 1.8em;
  font-family: var(--font-mono);
}

.typing-text {
  color: var(--accent-cyan);
  font-weight: 500;
}

.typing-cursor {
  color: var(--accent-cyan);
  animation: blink 0.8s step-end infinite;
}

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

.hero-intro {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 500px;
  margin-bottom: 2.25rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero-stat { text-align: center; }

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* Profile Card */
.hero-right {
  display: flex;
  justify-content: center;
}

.profile-card {
  position: relative;
  width: 340px;
}

.profile-glow {
  position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(56,189,248,0.2) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.profile-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-hover);
  box-shadow: 0 0 60px rgba(56,189,248,0.1), 0 40px 80px rgba(0,0,0,0.4);
  position: relative;
  z-index: 1;
}

.profile-image { width: 100%; }
.profile-image svg { width: 100%; height: auto; }

.profile-info {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  background: rgba(15,23,42,0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  z-index: 2;
}

.profile-info h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
}

.profile-info p {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

/* Floating tech badges */
.float-badge {
  position: absolute;
  background: rgba(30,41,59,0.95);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-hover);
  border-radius: 50px;
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  z-index: 3;
  animation: floatBadge 4s ease-in-out infinite;
}

.fb-1 { top: 10%;  left: -20%;  animation-delay: 0s; }
.fb-2 { top: 30%;  right: -25%; animation-delay: 0.8s; }
.fb-3 { top: 60%;  left: -25%;  animation-delay: 1.6s; }
.fb-4 { bottom: 20%; right: -20%; animation-delay: 2.4s; }
.fb-5 { top: 78%;   left: 5%;   animation-delay: 1.2s; }

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

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.4;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--accent-cyan));
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 0.4; }
  50% { transform: scaleY(1.3); opacity: 0.9; }
}

/* ===== MARQUEE ===== */
.marquee-section {
  overflow: hidden;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
  position: relative;
}

.marquee-section::before,
.marquee-section::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.marquee-section::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-secondary), transparent);
}

.marquee-section::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-secondary), transparent);
}

.marquee-track {
  overflow: hidden;
  cursor: default;
}

.marquee-inner {
  display: flex;
  gap: 0;
  animation: marqueeScroll 30s linear infinite;
  width: max-content;
}

.marquee-inner:hover { animation-play-state: paused; }

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.1rem;
  margin: 0 0.35rem;
  background: rgba(56,189,248,0.06);
  border: 1px solid rgba(56,189,248,0.12);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color var(--trans-fast), border-color var(--trans-fast);
  font-family: var(--font-mono);
}

.marquee-item:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-img-wrap {
  position: relative;
}

.about-img-bg {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse, rgba(56,189,248,0.08) 0%, transparent 70%);
  border-radius: var(--radius-xl);
  pointer-events: none;
}

.about-img {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-hover);
  box-shadow: 0 40px 80px rgba(0,0,0,0.4);
  position: relative;
  z-index: 1;
}

.about-img svg { width: 100%; height: auto; }

.exp-badge {
  position: absolute;
  bottom: 2rem;
  right: -1.5rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 12px 32px rgba(56,189,248,0.3);
  z-index: 2;
}

.exp-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.exp-text {
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.9;
  line-height: 1.4;
}

.about-text {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

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

.about-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
  transition: border-color var(--trans-base), transform var(--trans-base);
}

.about-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
}

.about-card-icon { font-size: 1.4rem; margin-bottom: 0.4rem; }

.about-card-info span,
.about-card-info .counter {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
}

.about-card-info p {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

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

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--trans-base), box-shadow var(--trans-base), transform var(--trans-base);
}

.skill-category:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 40px rgba(56,189,248,0.06);
  transform: translateY(-4px);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.skill-cat-icon { font-size: 1.4rem; }

.skill-cat-header h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-list { display: flex; flex-direction: column; gap: 1rem; }

/* .skill-item {} */

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.skill-info span:first-child {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.skill-info span:last-child {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

.skill-bar {
  height: 4px;
  background: rgba(56,189,248,0.1);
  border-radius: 50px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 50px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== SERVICES ===== */
.services-section { background: var(--bg-secondary); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all var(--trans-base);
  cursor: default;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transform: scaleX(0);
  transition: transform var(--trans-base);
  transform-origin: left;
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.3), 0 0 40px rgba(56,189,248,0.08);
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  font-size: 2.2rem;
  margin-bottom: 1.25rem;
  display: block;
  transition: transform var(--trans-base);
}

.service-card:hover .service-icon { transform: scale(1.1); }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.service-arrow {
  position: absolute;
  bottom: 1.5rem;
  right: 1.75rem;
  font-size: 1.2rem;
  color: var(--accent-cyan);
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--trans-base);
}

.service-card:hover .service-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ===== EXPERIENCE ===== */
.experience-section { background: var(--bg-primary); }

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple), transparent);
}

.timeline-item {
  position: relative;
  padding-left: 64px;
  margin-bottom: 3rem;
}

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

.timeline-dot {
  position: absolute;
  left: 12px;
  top: 1.5rem;
  width: 18px; height: 18px;
  background: var(--bg-primary);
  border: 2px solid var(--accent-cyan);
  border-radius: 50%;
  transition: box-shadow var(--trans-base), background var(--trans-base);
}

.timeline-item:hover .timeline-dot {
  background: var(--accent-cyan);
  box-shadow: 0 0 20px var(--accent-cyan);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--trans-base), box-shadow var(--trans-base);
}

.timeline-item:hover .timeline-content {
  border-color: var(--border-hover);
  box-shadow: 0 0 40px rgba(56,189,248,0.06);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 0.35rem;
}

.timeline-role {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

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

.timeline-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  background: rgba(139,92,246,0.12);
  border: 1px solid rgba(139,92,246,0.3);
  color: var(--accent-purple);
  white-space: nowrap;
}

.timeline-badge.current {
  background: rgba(34,197,94,0.1);
  border-color: rgba(34,197,94,0.3);
  color: #22C55E;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

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

.timeline-tags span {
  font-size: 0.76rem;
  font-family: var(--font-mono);
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border);
  color: var(--accent-cyan);
}

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

.project-filters {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 50px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
  transition: all var(--trans-fast);
  cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(56,189,248,0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--trans-base);
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.3);
}

.project-card.hidden {
  display: none;
}

.project-thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.project-thumb-icon { font-size: 3.5rem; z-index: 1; filter: drop-shadow(0 4px 16px rgba(0,0,0,0.4)); }

.project-info { padding: 1.5rem; }

.project-meta { margin-bottom: 0.75rem; }

.project-tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.25);
  color: var(--accent-purple);
}

.project-info h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.project-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.project-stack span {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(56,189,248,0.07);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.proj-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--trans-fast);
}

.proj-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.proj-demo:hover { color: var(--accent-cyan); }

/* ===== STATS ===== */
.stats-section {
  background: linear-gradient(135deg, rgba(56,189,248,0.05) 0%, rgba(139,92,246,0.05) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 5rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.stat-card {
  text-align: center;
  padding: 2.5rem 1rem;
  position: relative;
}

.stat-card::after {
  content: '';
  position: absolute;
  right: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: var(--border);
}

.stat-card:last-child::after { display: none; }

.stat-icon { font-size: 2rem; display: block; margin-bottom: 0.75rem; }

.stat-counter {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-plus {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  vertical-align: super;
}

.stat-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.5rem;
}

/* ===== TESTIMONIALS ===== */
.testimonials-section { background: var(--bg-primary); }

.testimonial-slider { position: relative; overflow: hidden; }

.testimonial-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.testimonial-card {
  min-width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}

.testi-quote {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
  color: var(--accent-cyan);
  opacity: 0.2;
  margin-bottom: -1.5rem;
  user-select: none;
}

.testi-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto 2rem;
  text-align: center;
  font-style: italic;
}

.testi-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: center;
}

.testi-avatar {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  color: #fff;
}

.testi-author strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text-primary);
}

.testi-author span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.testi-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.testi-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.testi-btn:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.testi-dots { display: flex; gap: 0.5rem; }

.testi-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background var(--trans-fast), transform var(--trans-fast);
}

.testi-dot.active {
  background: var(--accent-cyan);
  transform: scale(1.3);
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.contact-info > p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.contact-items { display: flex; flex-direction: column; gap: 1.25rem; margin-bottom: 2rem; }

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-item-icon {
  width: 44px; height: 44px;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item span {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.contact-item a,
.contact-item p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--trans-fast);
}

.contact-item a:hover { color: var(--accent-cyan); }

.social-links { display: flex; gap: 0.75rem; }

.social-link {
  width: 42px; height: 42px;
  background: rgba(56,189,248,0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--trans-fast);
}

.social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(56,189,248,0.1);
  transform: translateY(-3px);
}

/* Contact Form */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
}

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.form-group input,
.form-group textarea {
  background: rgba(15,23,42,0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--text-primary);
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.1);
}

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

.form-group input.error,
.form-group textarea.error {
  border-color: #F87171;
}

.form-error {
  font-size: 0.78rem;
  color: #F87171;
  min-height: 1em;
}

.form-submit { width: 100%; justify-content: center; margin-top: 0.5rem; }

.form-success {
  display: none;
  text-align: center;
  font-size: 0.92rem;
  color: #22C55E;
  padding: 0.75rem;
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.25);
  border-radius: var(--radius-md);
}

.form-success.visible { display: block; animation: fadeInUp 0.4s ease; }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .nav-logo { margin-bottom: 1rem; display: inline-flex; }

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 260px;
}

.footer-links h4,
.footer-social h4 {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.footer-links ul { display: flex; flex-direction: column; gap: 0.65rem; }

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--trans-fast), transform var(--trans-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--accent-cyan);
  transform: translateX(4px);
}

.footer-social .social-links { flex-wrap: wrap; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

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

.back-to-top {
  width: 40px; height: 40px;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--trans-fast);
}

.back-to-top:hover {
  background: rgba(56,189,248,0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-4px);
}

/* ===== REVEAL ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  animation: fadeInLeft 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  animation: fadeInRight 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

@keyframes fadeInLeft {
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Stagger reveal children */
.services-grid .service-card:nth-child(1) { transition-delay: 0.05s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.15s; }
.services-grid .service-card:nth-child(4) { transition-delay: 0.2s; }
.services-grid .service-card:nth-child(5) { transition-delay: 0.25s; }
.services-grid .service-card:nth-child(6) { transition-delay: 0.3s; }

.stats-grid .stat-card:nth-child(1) { transition-delay: 0.05s; }
.stats-grid .stat-card:nth-child(2) { transition-delay: 0.1s; }
.stats-grid .stat-card:nth-child(3) { transition-delay: 0.15s; }
.stats-grid .stat-card:nth-child(4) { transition-delay: 0.2s; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
  border-radius: 3px;
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(56,189,248,0.25);
  color: var(--text-primary);
}

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

/* Tablet */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .profile-card { width: 280px; }
  .fb-1, .fb-2, .fb-3, .fb-4, .fb-5 { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
}

/* Mobile large */
@media (max-width: 768px) {
  :root { --section-pad: 5rem 0; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0; right: 0;
    width: min(320px, 80vw);
    height: 100vh;
    background: rgba(17,24,39,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    gap: 0.25rem;
    transform: translateX(100%);
    transition: transform var(--trans-base);
    border-left: 1px solid var(--border);
    z-index: 999;
  }

  .nav-links.open { transform: translateX(0); }

  .nav-link { font-size: 1rem; padding: 0.7rem 1rem; width: 100%; }

  .btn-hire { margin-left: 0; margin-top: 1rem; width: 100%; justify-content: center; }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .hero-left .hero-badge,
  .hero-left .hero-cta { justify-content: center; }
  .hero-left .hero-intro { margin-left: auto; margin-right: auto; }
  .hero-stats { justify-content: center; }

  .hero-right { order: -1; }
  .profile-card { width: 240px; margin: 0 auto; }

  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-cards { grid-template-columns: repeat(2, 1fr); }
  .exp-badge { right: 0; }

  .skills-grid { grid-template-columns: 1fr; }

  .services-grid { grid-template-columns: 1fr; }

  .projects-grid { grid-template-columns: 1fr; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-card::after { display: none; }

  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  .timeline::before { left: 10px; }
  .timeline-item { padding-left: 44px; }
  .timeline-dot { left: 3px; }
  .timeline-header { flex-direction: column; gap: 0.75rem; }
}

/* Mobile small */
@media (max-width: 480px) {
  .hero-heading { font-size: 2rem; }
  .section-title { font-size: 1.8rem; }
  .about-cards { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .project-filters { gap: 0.5rem; }
  .filter-btn { font-size: 0.8rem; padding: 0.4rem 0.9rem; }
}