/* ==========================================================================
   KING · PRIYANSHU — MANGA-INSPIRED PAPER PORTFOLIO
   Design: Warm off-white paper + dark ink manga art + amber/gold accents
   ========================================================================== */

:root {
  /* Day: Warm paper with ink blacks and amber gold accent */
  --bg: #f2ece0;
  --bg-raised: #faf6ee;
  --text: #1a1714;
  --text-soft: #6b6356;
  --accent: #c4841d;
  --accent-glow: #e8a530;
  --accent-dim: rgba(196, 132, 29, 0.08);
  --border: #d9d0c0;
  --border-strong: #b5aa97;

  --shadow-card: 0 1px 3px rgba(26, 23, 20, 0.04), 0 4px 12px rgba(26, 23, 20, 0.03);
  --shadow-hover: 0 4px 20px rgba(26, 23, 20, 0.07);
  --font-heading: 'Instrument Serif', Georgia, serif;
  --font-body: 'Space Grotesk', system-ui, sans-serif;
}

[data-theme="night"] {
  --bg: #0f0e0c;
  --bg-raised: #1a1816;
  --text: #e8e2d6;
  --text-soft: #8a8278;
  --accent: #e8a530;
  --accent-glow: #f5c04a;
  --accent-dim: rgba(232, 165, 48, 0.06);
  --border: #2e2a25;
  --border-strong: #3e3830;

  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.2), 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.25);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-weight: 400;
  transition: background 0.5s, color 0.5s;
  overflow-x: hidden;
  position: relative;
}

::selection { background: rgba(196, 132, 29, 0.2); color: var(--accent); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* ═══════════ HERO BACKGROUND ART ═══════════ */
.hero-bg-art {
  position: fixed;
  top: -10%;
  right: -10%;
  width: 80%;
  height: 120vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 60% 45%, black 20%, transparent 70%);
  mask-image: radial-gradient(ellipse 70% 60% at 60% 45%, black 20%, transparent 70%);
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  opacity: 0.06;
  filter: grayscale(1) contrast(2);
  mix-blend-mode: multiply;
}

[data-theme="night"] .hero-bg-img {
  opacity: 0.08;
  filter: grayscale(1) contrast(2) invert(1);
  mix-blend-mode: screen;
}

/* ═══════════ SITE WRAPPER ═══════════ */
#site-wrapper {
  max-width: 920px;
  margin: 0 auto;
  padding: 3rem 2rem;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ═══════════ HEADER / NAV ═══════════ */
#main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.logo-link {
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  cursor: pointer;
  transition: opacity 0.2s;
}
.logo-link:hover { opacity: 0.8; }

.logo-name {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.02em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.nav-tabs {
  display: flex;
  list-style: none;
  gap: 0.15rem;
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.35rem 0.7rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--text-soft);
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.2s;
}

.tab-btn:hover { color: var(--text); background: var(--accent-dim); }

.tab-btn.active {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-dim);
}

.theme-btn {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  color: var(--text-soft);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 0.2s;
}
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }

.theme-icon { width: 14px; height: 14px; }

/* ═══════════ TAB CONTENT SWITCHING ═══════════ */
.tab-content {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.tab-content.active-content {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════ ABOUT TAB ═══════════ */
.about-layout {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
}

/* ═══════════ CIRCULAR AVATAR ═══════════ */
.about-avatar-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  flex-shrink: 0;
}

.avatar-ring {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  padding: 4px;
  background: conic-gradient(
    from 0deg,
    var(--accent),
    var(--accent-glow),
    var(--accent),
    transparent 70%,
    var(--accent)
  );
  animation: ring-spin 6s linear infinite;
  position: relative;
}

@keyframes ring-spin {
  to { transform: rotate(360deg); }
}

.avatar-ring::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--bg);
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 20%;
  position: relative;
  z-index: 1;
  filter: contrast(1.2) brightness(0.95);
}

[data-theme="night"] .avatar-img {
  filter: contrast(1.2) brightness(0.8);
}

.avatar-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.about-text-panel {
  padding-top: 0.5rem;
  flex: 1;
  min-width: 0;
}

.about-name {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 400;
  line-height: 1;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.about-subtitle {
  font-size: 1rem;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
}

.about-line {
  width: 50px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 1.5rem;
}

.about-bio {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  margin-bottom: 1.8rem;
}

.king-quote {
  border-left: 3px solid var(--accent);
  padding: 1.2rem 1.5rem;
  margin-bottom: 2rem;
  background: var(--accent-dim);
  border-radius: 0 8px 8px 0;
}

.king-quote p {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 0.6rem;
}

.king-quote footer {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-soft);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.about-actions {
  display: flex;
  gap: 0.8rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border: 1px solid var(--border);
}

.action-btn.primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.action-btn.primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 132, 29, 0.2);
}

.action-btn.engine-btn {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.action-btn.engine-btn:hover {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196, 132, 29, 0.2);
}

.contact-strip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.contact-link {
  font-size: 0.85rem;
  color: var(--text-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.contact-link:hover { color: var(--accent); }

.contact-sep { color: var(--border-strong); font-size: 0.7rem; }

/* ═══════════ SECTION HEADERS ═══════════ */
.section-header-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--text);
}

.section-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ═══════════ TIMELINE (EXPERIENCE) ═══════════ */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--border));
}

.timeline-item { position: relative; margin-bottom: 3rem; }
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -2.5rem;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
  transition: all 0.2s;
}

.timeline-item:hover .timeline-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-dim);
}

.timeline-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.8rem;
  box-shadow: var(--shadow-card);
  transition: all 0.2s;
}

.timeline-item:hover .timeline-card {
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.tl-role {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.tl-company {
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.3rem;
}

.tl-meta {
  font-size: 0.82rem;
  color: var(--text-soft);
  margin-bottom: 1rem;
}

.tl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.2rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(196, 132, 29, 0.15);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.tl-bullets { list-style: none; }

.tl-bullets li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
  color: var(--text);
}

.tl-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* ═══════════ PROJECTS GRID ═══════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
}

.proj-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
  position: relative;
  overflow: hidden;
}

.proj-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  opacity: 0;
  transition: opacity 0.3s;
}

.proj-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.proj-card:hover::before { opacity: 1; }

.proj-card h3 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.proj-tagline {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.proj-desc {
  font-size: 0.92rem;
  color: var(--text);
  line-height: 1.55;
  margin-bottom: 1.2rem;
  flex-grow: 1;
}

.proj-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 1.2rem;
}

.proj-links {
  display: flex;
  gap: 1rem;
}

.proj-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.proj-link:hover { color: var(--text); }

.proj-link::before {
  content: '→';
  font-size: 0.9rem;
}

/* ═══════════ SKILLS GRID ═══════════ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-bottom: 3rem;
}

.skill-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s;
}

.skill-card:hover { border-color: var(--accent); }

.skill-card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.edu-block { margin-top: 1rem; }

.edu-heading {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--text);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.edu-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.edu-card h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.edu-card .degree {
  font-size: 0.92rem;
  color: var(--text-soft);
  font-style: italic;
  margin-bottom: 0.8rem;
}

.edu-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-soft);
  border-top: 1px dashed var(--border);
  padding-top: 0.7rem;
}

.edu-meta-row strong { color: var(--accent); }

/* ═══════════ ACHIEVEMENTS ═══════════ */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.2rem;
}

.ach-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: border-color 0.2s;
}

.ach-card:hover { border-color: var(--accent); }

.ach-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-dim);
  border: 1px solid rgba(196, 132, 29, 0.15);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.ach-text h4 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.ach-text p {
  font-size: 0.88rem;
  color: var(--text-soft);
}

/* ═══════════ FOOTER ═══════════ */
#main-footer {
  margin-top: 6rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  position: relative;
}

.footer-text { text-align: right; }

.footer-copy {
  font-size: 0.72rem;
  color: var(--text-soft);
  opacity: 0.6;
}

/* ═══════════ KING ENGINE VFX ═══════════ */
#king-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.4s;
}

#king-watermark {
  position: fixed;
  bottom: 3rem;
  right: 3rem;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--accent);
  opacity: 0;
  z-index: 9999;
  pointer-events: none;
  letter-spacing: 0.15em;
}

.king-engine-active #king-vignette {
  opacity: 1;
  animation: vignette-pulse 1.2s infinite ease-in-out;
}

.king-engine-active #king-watermark {
  animation: watermark-pulse 1.2s infinite ease-in-out;
}

.king-engine-active #site-wrapper {
  animation: page-thump 1.2s infinite ease-in-out;
}

.king-engine-active .avatar-img {
  animation: art-shake 1.2s infinite ease-in-out;
}

@keyframes vignette-pulse {
  0%   { box-shadow: inset 0 0 80px rgba(0,0,0,0.3); }
  12%  { box-shadow: inset 0 0 120px rgba(196, 132, 29, 0.25), inset 0 0 200px rgba(0,0,0,0.4); }
  25%  { box-shadow: inset 0 0 80px rgba(0,0,0,0.3); }
  35%  { box-shadow: inset 0 0 100px rgba(196, 132, 29, 0.2), inset 0 0 160px rgba(0,0,0,0.35); }
  50%  { box-shadow: inset 0 0 80px rgba(0,0,0,0.3); }
  100% { box-shadow: inset 0 0 80px rgba(0,0,0,0.3); }
}

@keyframes watermark-pulse {
  0%   { opacity: 0; transform: scale(1); }
  12%  { opacity: 0.5; transform: scale(1.08); }
  25%  { opacity: 0.05; transform: scale(1); }
  35%  { opacity: 0.35; transform: scale(1.04); }
  50%  { opacity: 0; transform: scale(1); }
  100% { opacity: 0; }
}

@keyframes page-thump {
  0%   { transform: scale(1); }
  12%  { transform: scale(1.004); }
  25%  { transform: scale(1); }
  35%  { transform: scale(1.002); }
  50%  { transform: scale(1); }
  100% { transform: scale(1); }
}

@keyframes art-shake {
  0%   { transform: translateX(0); }
  12%  { transform: translateX(-2px) rotate(-0.3deg); }
  25%  { transform: translateX(0); }
  35%  { transform: translateX(1px) rotate(0.2deg); }
  50%  { transform: translateX(0); }
  100% { transform: translateX(0); }
}

/* ═══════════ RESPONSIVENESS ═══════════ */
@media (max-width: 860px) {
  .about-layout {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
  }

  .avatar-ring { width: 150px; height: 150px; }

  .hero-bg-art { opacity: 0.5; }
}

@media (max-width: 700px) {
  #site-wrapper { padding: 2rem 1.2rem; }

  #main-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .header-nav {
    flex-direction: column;
    gap: 0.6rem;
    width: 100%;
  }

  .nav-tabs {
    justify-content: center;
    flex-wrap: wrap;
  }

  .section-title { font-size: 2rem; }

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

  #main-footer { text-align: center; }
  .footer-text { text-align: center; }

  #king-watermark { font-size: 1.5rem; right: 1rem; bottom: 1.5rem; }
}