/* ===== Reset & Base ===== */
:root {
  --black: #000000;
  --near-black: #0a0a0a;
  --dark: #111111;
  --dark-alt: #1a1a1a;
  --gray-800: #222222;
  --gray-700: #333333;
  --gray-600: #555555;
  --gray-500: #777777;
  --gray-400: #999999;
  --gray-300: #bbbbbb;
  --gray-200: #dddddd;
  --gray-100: #f0f0f0;
  --white: #ffffff;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--black);
  color: var(--gray-200);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: var(--white);
  color: var(--black);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--black);
}
::-webkit-scrollbar-thumb {
  background: var(--gray-700);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* ===== Utility ===== */
.bg-dark-alt {
  background-color: var(--near-black);
}

/* ===== Navigation ===== */
.navbar {
  padding: 1rem 0;
  background: transparent;
  transition: all var(--transition);
  z-index: 1000;
}

.navbar.scrolled {
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0.6rem 0;
}

.navbar-brand {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white) !important;
  letter-spacing: -1px;
}

.navbar-brand .dot {
  color: var(--gray-500);
}

.nav-link {
  color: var(--gray-400) !important;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 0.5rem 1.2rem !important;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--white) !important;
}

.navbar-toggler {
  border: none;
  padding: 0;
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--black);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.02) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(255, 255, 255, 0.015) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero-subtitle {
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 3px;
}

.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.05;
  letter-spacing: -2px;
}

.hero-description {
  font-size: 1.2rem;
  font-weight: 400;
  min-height: 2em;
}

.typewrite {
  color: var(--gray-300);
  border-right: 2px solid var(--white);
  padding-right: 4px;
  animation: blink 0.75s step-end infinite;
}

@keyframes blink {
  50% { border-color: transparent; }
}

.hero-text {
  font-size: 1rem;
  color: var(--gray-400);
  max-width: 600px;
}

.hero-actions .btn {
  border-radius: 0;
  padding: 0.8rem 2rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  transition: all var(--transition);
}

.hero-actions .btn-outline-light {
  border: 2px solid var(--gray-600);
  color: var(--gray-300);
}

.hero-actions .btn-outline-light:hover {
  border-color: var(--white);
  color: var(--white);
  background: transparent;
  transform: translateY(-2px);
}

.hero-actions .btn-light {
  background: var(--white);
  color: var(--black);
  border: 2px solid var(--white);
}

.hero-actions .btn-light:hover {
  background: transparent;
  color: var(--white);
  transform: translateY(-2px);
}

.hero-code-block {
  text-align: left;
}

.hero-code-block pre {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--gray-400);
  overflow-x: auto;
}

.hero-code-block .code-gray { color: var(--gray-600); }
.hero-code-block .code-key { color: var(--gray-200); }
.hero-code-block .code-str { color: var(--gray-400); }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid var(--gray-600);
  border-radius: 12px;
  display: block;
  position: relative;
  opacity: 0.6;
}

.wheel {
  width: 3px;
  height: 8px;
  background: var(--gray-400);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 0.3; }
}

/* ===== Sections ===== */
.section {
  padding: 7rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.section:last-of-type {
  border-bottom: none;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -1px;
}

/* ===== About ===== */
.about-text {
  font-size: 0.95rem;
  color: var(--gray-400);
  margin-bottom: 1.2rem;
  line-height: 1.8;
}

.about-text strong {
  color: var(--gray-200);
  font-weight: 600;
}

.about-stats {
  display: flex;
  gap: 2.5rem;
}

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

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}

.stat-label {
  font-size: 0.7rem;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 0.3rem;
  display: block;
}

.about-image-wrap {
  position: relative;
  overflow: hidden;
  max-height: 400px;
}

.about-image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, var(--black) 0%, transparent 30%, transparent 70%, var(--black) 100%);
  pointer-events: none;
}

.about-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(1) contrast(1.1);
}

/* ===== Skills ===== */
.skill-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.8rem;
  height: 100%;
  transition: all var(--transition);
}

.skill-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-3px);
}

.skill-card h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1.2rem;
}

.skill-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skill-card ul li {
  font-size: 0.95rem;
  color: var(--gray-200);
  padding: 0.35rem 0;
  position: relative;
  padding-left: 1.2rem;
}

.skill-card ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--gray-600);
}

/* ===== Projects ===== */
.project-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.8rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.project-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-4px);
}

.project-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.project-folder {
  color: var(--gray-400);
}

.project-links a {
  color: var(--gray-600);
  transition: color var(--transition);
}

.project-links a:hover {
  color: var(--white);
}

.project-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.8rem;
}

.project-description {
  font-size: 0.88rem;
  color: var(--gray-400);
  line-height: 1.7;
  flex-grow: 1;
}

.project-tags {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-tags li {
  font-size: 0.7rem;
  color: var(--gray-500);
  border: 1px solid var(--gray-700);
  padding: 0.25rem 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--gray-700);
}

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}

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

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 4px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--gray-700);
  border: 2px solid var(--black);
  transition: background var(--transition);
}

.timeline-item:hover .timeline-dot {
  background: var(--gray-300);
}

.timeline-date {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

.timeline-content h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.2rem;
}

.timeline-company {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 0.6rem;
}

.timeline-content p:last-child {
  font-size: 0.9rem;
  color: var(--gray-400);
  line-height: 1.7;
}

/* ===== Contact ===== */
.contact-text {
  font-size: 1rem;
  color: var(--gray-400);
  line-height: 1.8;
}

.contact-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.6rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition);
  min-width: 280px;
}

.contact-link svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.contact-link:hover {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.03);
  transform: translateX(4px);
}

/* ===== Footer ===== */
.footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: var(--near-black);
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--gray-600);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--gray-600);
  font-style: italic;
}

/* ===== Animations on scroll ===== */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .navbar-collapse {
    background: rgba(0, 0, 0, 0.98);
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 0.5rem;
  }

  .nav-link {
    text-align: center;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 4rem 0;
  }

  .about-stats {
    justify-content: center;
  }

  .timeline {
    padding-left: 1.5rem;
  }

  .contact-link {
    min-width: auto;
    width: 100%;
    justify-content: center;
  }

  .footer {
    text-align: center;
  }

  .footer .text-md-end {
    text-align: center !important;
    margin-top: 0.5rem;
  }
}