:root {
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #172554 100%);
  --gradient-card: linear-gradient(145deg, rgba(99, 102, 241, .08) 0%, rgba(168, 85, 247, .08) 100%);
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-light: #334155;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent: #818cf8;
  --color-accent2: #a78bfa;
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, .4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, .5);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  line-height: 1.7;
}

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

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-surface-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent); }

/* ===== NAVBAR ===== */
.navbar {
  padding: 1rem 0;
  transition: all var(--transition);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(15, 23, 42, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, .05);
}
.navbar.scrolled {
  padding: 0.6rem 0;
  background: rgba(15, 23, 42, 0.92);
  box-shadow: var(--shadow-md);
}
.navbar-brand {
  font-weight: 800;
  font-size: 1.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.navbar-dark .navbar-nav .nav-link {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 1.2rem !important;
  border-radius: 2rem;
  transition: all var(--transition);
}
.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
  color: #fff;
  background: rgba(99, 102, 241, .2);
}
.navbar-toggler { border: none; padding: 0.5rem; }
.navbar-toggler:focus { box-shadow: none; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(99, 102, 241, .15) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 50%, rgba(168, 85, 247, .1) 0%, transparent 50%);
  animation: heroPulse 8s ease-in-out infinite;
}
@keyframes heroPulse {
  0%, 100% { transform: rotate(0deg) scale(1); }
  33% { transform: rotate(2deg) scale(1.05); }
  66% { transform: rotate(-2deg) scale(0.95); }
}
.hero .container { position: relative; z-index: 1; }
.hero-avatar {
  width: 180px; height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, .15);
  box-shadow: 0 0 60px rgba(99, 102, 241, .3);
  transition: transform var(--transition);
}
.hero-avatar:hover { transform: scale(1.05); }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}
.hero .subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  font-weight: 400;
  max-width: 500px;
  margin: 0 auto;
}
.hero .badge-role {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 2rem;
  font-size: 0.85rem;
  margin: 0.3rem 0.2rem;
  backdrop-filter: blur(8px);
}

/* ===== DIVIDER ===== */
.divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: center;
  margin: 1.5rem 0;
}
.divider-line {
  height: 2px;
  width: 80px;
  background: var(--gradient-primary);
  border-radius: 2px;
}
.divider i {
  font-size: 1.2rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.divider-light .divider-line { background: rgba(255, 255, 255, .3); }
.divider-light i { -webkit-text-fill-color: #fff; }

/* ===== SECTION ===== */
.section { padding: 6rem 0; position: relative; }
.section-alt { background: var(--color-surface); }
.section-heading {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.5px;
}
.section-heading .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== PROJECT CARDS ===== */
.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, .06);
  transition: all var(--transition);
  height: 100%;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(99, 102, 241, .2);
  border-color: rgba(99, 102, 241, .3);
}
.project-card-img { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.project-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.project-card:hover .project-card-img img { transform: scale(1.08); }
.project-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, .95) 0%, rgba(15, 23, 42, .3) 50%, transparent 100%);
  display: flex; align-items: flex-end; justify-content: center;
  padding: 1.5rem; opacity: 0;
  transition: opacity var(--transition);
}
.project-card:hover .project-card-overlay { opacity: 1; }
.project-card-overlay span {
  color: #fff; font-weight: 600; font-size: 0.9rem;
  background: rgba(99, 102, 241, .5);
  padding: 0.5rem 1.5rem; border-radius: 2rem;
  backdrop-filter: blur(8px);
}

/* ===== MODAL ===== */
.modal-content {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.modal-header { border-bottom: 1px solid rgba(255, 255, 255, .06); padding: 1.5rem 2rem; }
.modal-body { padding: 2rem; }
.modal-title { font-weight: 700; letter-spacing: -0.5px; }
.modal .btn-close { filter: invert(1); opacity: 0.5; }
.btn-primary {
  background: var(--gradient-primary);
  border: none; border-radius: 2rem;
  padding: 0.65rem 1.8rem; font-weight: 600;
  transition: all var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, .35);
}

/* ===== ABOUT ===== */
.about-card {
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem; text-align: center;
  transition: all var(--transition);
}
.about-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(99, 102, 241, .2);
  transform: translateY(-4px);
}
.about-card .icon {
  font-size: 2.5rem; margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.btn-outline {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 2rem;
  border: 2px solid rgba(255, 255, 255, .2);
  border-radius: 2rem;
  color: #fff; font-weight: 600; text-decoration: none;
  transition: all var(--transition);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, .15);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, .25);
}

/* ===== CONTACT FORM ===== */
.form-control {
  background: var(--color-surface) !important;
  border: 1px solid rgba(255, 255, 255, .08) !important;
  border-radius: var(--radius-sm) !important;
  color: var(--color-text) !important;
  padding: 0.8rem 1.2rem !important;
  font-size: 1rem !important;
  transition: all var(--transition) !important;
}
.form-control:focus {
  border-color: var(--color-accent) !important;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, .15) !important;
}
.form-control::placeholder { color: var(--color-text-muted); }
.form-label { font-weight: 500; font-size: 0.9rem; color: var(--color-text-muted); margin-bottom: 0.4rem; }
textarea.form-control { min-height: 140px; resize: vertical; }

/* ===== FOOTER ===== */
.footer {
  background: var(--color-surface);
  border-top: 1px solid rgba(255, 255, 255, .05);
  padding: 4rem 0 2rem;
}
.footer h5 { font-weight: 700; font-size: 0.95rem; letter-spacing: 0.5px; margin-bottom: 1.2rem; }
.social-link {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .12);
  color: var(--color-text-muted); text-decoration: none;
  transition: all var(--transition);
  font-size: 1.1rem; margin: 0.25rem;
}
.social-link:hover {
  border-color: var(--color-accent);
  background: rgba(99, 102, 241, .15);
  color: var(--color-accent);
  transform: translateY(-3px);
}
.footer .text-muted { color: var(--color-text-muted) !important; }
.copyright { text-align: center; padding: 1.5rem 0 1rem; color: var(--color-text-muted); font-size: 0.85rem; }

/* ===== SCROLL REVEAL ===== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.show { opacity: 1; transform: translateY(0); }

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--gradient-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  text-decoration: none;
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 1000;
  box-shadow: 0 4px 16px rgba(99, 102, 241, .4);
  font-size: 1.1rem;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); color: #fff; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .hero-avatar { width: 140px; height: 140px; }
  .about-card { margin-bottom: 1.5rem; }
}

/* ===== KEYFRAMES ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.6s ease backwards; }
.animate-in:nth-child(1) { animation-delay: 0.1s; }
.animate-in:nth-child(2) { animation-delay: 0.2s; }
.animate-in:nth-child(3) { animation-delay: 0.3s; }
.animate-in:nth-child(4) { animation-delay: 0.4s; }
.animate-in:nth-child(5) { animation-delay: 0.5s; }
.animate-in:nth-child(6) { animation-delay: 0.6s; }
.animate-in:nth-child(7) { animation-delay: 0.7s; }
.animate-in:nth-child(8) { animation-delay: 0.8s; }
.animate-in:nth-child(9) { animation-delay: 0.9s; }

/* ===== CODE THEMED ===== */
.code-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(99, 102, 241, .15);
  border: 1px solid rgba(99, 102, 241, .25);
  border-radius: 2rem;
  font-size: 0.8rem; font-weight: 500;
  color: var(--color-accent);
}

/* ===== DROPDOWN ===== */
.dropdown-menu-dark {
  background: rgba(30, 41, 59, 0.98);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-md);
  padding: 0.5rem 0;
  min-width: max-content;
}
.dropdown-menu-dark .dropdown-item {
  color: var(--color-text);
  padding: 0.55rem 1.2rem;
  font-size: 0.9rem;
  transition: all var(--transition);
}
.dropdown-menu-dark .dropdown-item:hover,
.dropdown-menu-dark .dropdown-item:focus {
  background: rgba(99, 102, 241, .15);
  color: #fff;
}
.dropdown-menu-dark .dropdown-divider { border-color: rgba(255, 255, 255, .06); }
.dropdown-menu-dark .dropdown-header {
  color: var(--color-text-muted);
  font-size: 0.7rem;
  padding: 0.5rem 1.2rem 0.3rem;
}
.dropdown-submenu { position: relative; }
.dropdown-submenu>.dropdown-toggle::after { float: right; margin-top: 0.45rem; }
.dropdown-submenu>.submenu {
  top: 0; left: auto; right: 100%;
  margin-top: -0.35rem; margin-right: 0.125rem;
}
@media (min-width: 992px) {
  .dropdown-submenu:hover>.submenu { display: block; }
  .dropdown:hover>.dropdown-menu { display: block; }
}
@media (max-width: 991.98px) {
  .dropdown-submenu>.submenu {
    position: static; border: none;
    background: rgba(0, 0, 0, .15);
    border-radius: 0; box-shadow: none;
    padding-left: 1rem; margin-top: 0;
  }
  .dropdown-menu-dark { border: none; background: transparent; backdrop-filter: none; box-shadow: none; }
}