/* ===== SYSTEM DESIGN & VARIABLES ===== */
:root {
  --bg-primary: #090b0f;
  --bg-secondary: #0f121a;
  --bg-card: #151b26;
  --bg-glass: rgba(255, 255, 255, 0.02);

  --accent-primary: #3b82f6;
  --accent-primary-dim: rgba(59, 130, 246, 0.08);
  --accent-secondary: #2563eb;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #475569;

  --border-subtle: rgba(255, 255, 255, 0.05);
  --border-accent: rgba(59, 130, 246, 0.15);

  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', 'Inter', sans-serif;

  --section-padding: clamp(4.5rem, 8vw, 7rem);
  --container-max: 1100px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-full: 9999px;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s var(--ease-out-expo);
  --transition-fast: 0.18s var(--ease-out-expo);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: #1c2420; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-primary); }

/* ===== LAYOUT & COMPONENTS ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.gradient-text {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-primary) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition-fast);
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  font-weight: 600;
}
.btn-primary:hover {
  background: #34d399;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}
.btn-secondary:hover {
  border-color: var(--accent-primary);
  background: var(--accent-primary-dim);
  transform: translateY(-1px);
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  padding: 0.8rem 0;
  backdrop-filter: blur(16px);
  background: rgba(10, 13, 12, 0.75);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
  background: var(--accent-primary-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
}

.nav-logo .name { color: var(--text-primary); }
.nav-logo .domain { color: var(--accent-primary); font-weight: 400; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
  padding: 0.45rem 1.1rem !important;
  border: 1px solid var(--border-accent) !important;
  border-radius: var(--radius-full) !important;
  color: var(--accent-primary) !important;
  background: var(--accent-primary-dim);
}
.nav-cta:hover {
  background: var(--accent-primary) !important;
  color: var(--bg-primary) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}
.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: calc(var(--section-padding) + 3rem) 0 3rem;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-accent);
  background: var(--accent-primary-dim);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-primary);
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-primary);
  border-radius: 50%;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 1.8vw, 1.08rem);
  color: var(--text-secondary);
  max-width: 500px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 0.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero-visual {
  position: relative;
}

.hero-image-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  aspect-ratio: 4 / 4.8;
  background: var(--bg-secondary);
}

.hero-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(15%) contrast(105%);
}

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: 0.6rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.section-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0.5rem auto 0;
  line-height: 1.6;
}

/* ===== ABOUT ===== */
.about {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
}

.about-content-wrap {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 3rem;
  background: var(--bg-primary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3.5rem;
  align-items: center;
}

.about-portrait {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--border-subtle);
}

.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(15%) contrast(105%);
}

.about-text-area {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.about-text-area .section-tag { justify-content: flex-start; }
.about-text-area .section-title { text-align: left; }

.about-paragraph {
  color: var(--text-secondary);
  line-height: 1.65;
  font-size: 0.92rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.5rem;
}

.about-highlight {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.about-highlight-icon {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
  flex-shrink: 0;
}

.about-highlight-text {
  display: flex;
  flex-direction: column;
}

.about-highlight-text .label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.about-highlight-text .value {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* ===== PROJECTS ===== */
.projects {
  padding: var(--section-padding) 0;
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-normal);
}

.project-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.project-card:nth-child(even) { direction: rtl; }
.project-card:nth-child(even) > * { direction: ltr; }

.project-visual {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  border-right: 1px solid var(--border-subtle);
}
.project-card:nth-child(even) .project-visual {
  border-right: none;
  border-left: 1px solid var(--border-subtle);
}

.project-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-out-expo);
  filter: contrast(98%) brightness(95%);
}

.project-card:hover .project-visual img {
  transform: scale(1.02);
}

.project-number {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  background: rgba(10, 13, 12, 0.8);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  color: var(--accent-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.project-details {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.95rem;
}

.project-icon-badge {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-tag {
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.68rem;
  font-weight: 500;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-primary);
  margin-top: 0.5rem;
  width: fit-content;
  transition: var(--transition-fast);
}
.project-link:hover { gap: 0.55rem; color: #34d399; }
.project-link svg { transition: transform var(--transition-fast); }
.project-link:hover svg { transform: translateX(2px); }

/* ===== EXPERTISE ===== */
.expertise {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.expertise-card {
  padding: 2rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
}

.expertise-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.expertise-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
  margin-bottom: 1.1rem;
}

.expertise-title {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.expertise-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 3rem;
  align-items: flex-start;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
}
.footer-logo .name { color: var(--text-primary); }
.footer-logo .domain { color: var(--accent-primary); }

.footer-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 280px;
  line-height: 1.5;
}

.footer-copy {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.footer-links-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  width: fit-content;
}
.footer-link-item:hover { color: var(--accent-primary); }

.footer-action {
  display: flex;
  justify-content: flex-end;
}

/* ===== DISCLAIMER ===== */
.disclaimer-box {
  margin-top: 3rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-secondary);
  text-align: left;
}

.disclaimer-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.disclaimer-title svg {
  color: var(--accent-primary);
  flex-shrink: 0;
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  .hero-content { align-items: center; }
  .hero-subtitle { margin: 0 auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { max-width: 500px; margin: 2rem auto 0; }
  .hero-visual { max-width: 360px; margin: 0 auto; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-portrait { max-width: 320px; margin: 0 auto; }
  
  .project-card { grid-template-columns: 1fr; }
  .project-card:nth-child(even) { direction: ltr; }
  .project-visual { border-right: none; border-bottom: 1px solid var(--border-subtle); }
  .project-card:nth-child(even) .project-visual { border-left: none; border-bottom: 1px solid var(--border-subtle); }

  .expertise-grid { grid-template-columns: 1fr 1fr; }
  
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 260px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    background: rgba(10, 13, 12, 0.96);
    backdrop-filter: blur(24px);
    border-left: 1px solid var(--border-subtle);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    gap: 1.5rem;
    padding: 2rem;
    z-index: 99;
  }
  
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

  .about-content-wrap { padding: 2rem 1.5rem; }
  .about-highlights { grid-template-columns: 1fr; }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }
  .footer-desc { margin: 0 auto; }
  .footer-link-item { margin: 0 auto; }
  .footer-action { justify-content: center; }
}