/* ============================================================
   ANISH LAMSAL — PORTFOLIO DESIGN SYSTEM
   Warm Amber/Gold palette · Clean minimal aesthetic
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- Design Tokens (Light Theme) --- */
:root {
  /* Primary Palette — Warm Amber/Gold */
  --primary: #c8913a;
  --primary-light: #daa54e;
  --primary-dark: #a37424;
  --primary-subtle: #f5ead6;
  --primary-ghost: rgba(200, 145, 58, 0.08);

  /* Deep Accent */
  --accent-deep: #7a5c1f;
  --accent-rich: #5c4316;

  /* Surfaces */
  --bg-primary: #ffffff;
  --bg-secondary: #faf8f5;
  --bg-tertiary: #f3efe8;
  --bg-card: #ffffff;
  --bg-nav: rgba(255, 255, 255, 0.92);

  /* Typography */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --text-inverse: #ffffff;

  /* Borders & Shadows */
  --border-light: #e8e2d9;
  --border-medium: #d4ccc0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 25px rgba(0, 0, 0, 0.12);

  /* Project Card Banners */
  --banner-1: #a37424;
  --banner-2: #c8913a;
  --banner-3: #b09060;

  /* Spacing */
  --section-py: 100px;
  --container-max: 1200px;
  --nav-height: 70px;

  /* Transitions */
  --transition-fast: 200ms ease;
  --transition-medium: 350ms ease;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --primary: #daa54e;
  --primary-light: #e8bc6e;
  --primary-dark: #c8913a;
  --primary-subtle: #2a2418;
  --primary-ghost: rgba(218, 165, 78, 0.1);

  --accent-deep: #daa54e;
  --accent-rich: #c8913a;

  --bg-primary: #0f1117;
  --bg-secondary: #161922;
  --bg-tertiary: #1c2030;
  --bg-card: #1a1e2b;
  --bg-nav: rgba(15, 17, 23, 0.92);

  --text-primary: #e8e6e3;
  --text-secondary: #9ca3b4;
  --text-tertiary: #6b7280;
  --text-inverse: #0f1117;

  --border-light: #2a2e3b;
  --border-medium: #3a3f4e;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-card-hover: 0 8px 25px rgba(0, 0, 0, 0.35);

  --banner-1: #7a5c1f;
  --banner-2: #a37424;
  --banner-3: #8b7a55;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-medium), color var(--transition-medium);
}

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

a:hover {
  color: var(--primary-dark);
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

::selection {
  background: var(--primary);
  color: var(--text-inverse);
}

/* ============================================================
   CONTAINER
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: background-color var(--transition-medium), border-color var(--transition-medium);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.938rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width var(--transition-fast);
}

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

.nav-links a.active::after,
.nav-links a:hover::after {
  width: 100%;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 1.25rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--primary-ghost);
  color: var(--primary);
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.mobile-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section {
  padding: var(--section-py) 0;
}

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

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 60px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--nav-height);
  background: var(--bg-secondary);
}

.hero-content {
  max-width: 700px;
}

.hero-avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 36px;
  border: 4px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  transition: border-color var(--transition-medium), transform var(--transition-medium);
}

.hero-avatar:hover {
  border-color: var(--primary-light);
  transform: scale(1.03);
}

.hero-greeting {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.hero-greeting .highlight {
  color: var(--primary);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  min-height: 1.8em;
}

.hero-subtitle .typewriter-text {
  color: var(--primary);
  font-weight: 600;
}

.hero-subtitle .typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--primary);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-tagline {
  font-size: 1rem;
  color: var(--text-tertiary);
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-inverse);
  box-shadow: 0 2px 8px rgba(200, 145, 58, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--text-inverse);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(200, 145, 58, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-medium);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.about-image:hover img {
  transform: scale(1.02);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.02rem;
  line-height: 1.8;
}

.about-text .btn {
  margin-top: 12px;
}

/* ============================================================
   SKILLS SECTION
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px 16px;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: default;
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary-light);
}

.skill-icon {
  font-size: 2.5rem;
  margin-bottom: 14px;
  display: block;
}

.skill-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

/* ============================================================
   PROJECTS SECTION
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

.project-banner {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  text-align: center;
  padding: 20px;
  letter-spacing: -0.3px;
}

.project-banner-1 { background: var(--banner-1); }
.project-banner-2 { background: var(--banner-2); }
.project-banner-3 { background: var(--banner-3); }

.project-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  line-height: 1.35;
}

.project-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--primary);
  background: var(--primary-ghost);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.tag:hover {
  border-color: var(--primary-light);
}

.project-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.project-link:hover {
  color: var(--primary-dark);
  gap: 8px;
}

/* ============================================================
   TIMELINE (EXPERIENCE & EDUCATION)
   ============================================================ */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border-light);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
  padding-left: 28px;
}

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

.timeline-dot {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 3px var(--primary-light);
  z-index: 1;
  transition: background var(--transition-medium), box-shadow var(--transition-medium);
}

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

.timeline-role {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-meta {
  font-size: 0.92rem;
  color: var(--primary);
  margin-bottom: 14px;
  font-weight: 500;
}

.timeline-details {
  padding-left: 0;
}

.timeline-details li {
  position: relative;
  padding-left: 18px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  line-height: 1.7;
}

.timeline-details li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--text-tertiary);
  font-weight: 700;
}

.timeline-note {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-content .section-title {
  margin-bottom: 24px;
}

.contact-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.8;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 32px;
}

.social-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 1.4rem;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-light);
}

.social-icon:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-light);
  padding: 40px 0;
  text-align: center;
  transition: background-color var(--transition-medium), border-color var(--transition-medium);
}

.footer p {
  font-size: 0.88rem;
  color: var(--text-tertiary);
  line-height: 1.8;
}

.footer .heart {
  color: #e25555;
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-fast);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children */
.fade-in-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-children.visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(2) { transition-delay: 0.10s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(3) { transition-delay: 0.15s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(4) { transition-delay: 0.20s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(5) { transition-delay: 0.25s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(6) { transition-delay: 0.30s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(7) { transition-delay: 0.35s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(8) { transition-delay: 0.40s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(9) { transition-delay: 0.45s; opacity: 1; transform: none; }
.fade-in-children.visible > *:nth-child(10) { transition-delay: 0.50s; opacity: 1; transform: none; }

/* ============================================================
   MINI PAGE MAP (right side thumbnail)
   ============================================================ */
/* Skipping the page map — not essential */

/* ============================================================
   RESPONSIVE — TABLET (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --section-py: 72px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 280px;
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-medium);
    z-index: 1000;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  .mobile-toggle {
    display: flex;
  }

  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

  .about-image {
    max-width: 360px;
    margin: 0 auto;
  }

  .hero-greeting {
    font-size: 2.4rem;
  }

  .section-title {
    font-size: 1.9rem;
    margin-bottom: 44px;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 600px)
   ============================================================ */
@media (max-width: 600px) {
  :root {
    --section-py: 56px;
    --nav-height: 60px;
  }

  .hero-avatar {
    width: 140px;
    height: 140px;
  }

  .hero-greeting {
    font-size: 1.9rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    padding: 12px 28px;
    font-size: 0.9rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .skill-card {
    padding: 24px 12px;
  }

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

  .about-grid {
    gap: 28px;
  }

  .about-image {
    max-width: 280px;
  }

  .section-title {
    font-size: 1.65rem;
    margin-bottom: 36px;
  }

  .timeline {
    padding-left: 24px;
  }

  .timeline-item {
    padding-left: 20px;
  }

  .timeline-dot {
    left: -22px;
    width: 12px;
    height: 12px;
  }

  .scroll-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

/* ============================================================
   OVERLAY (mobile nav background)
   ============================================================ */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}