/* ═══════════════════════════════════════════════════════
   portfolio — custom styles
   light background canvas with dark sleek components
   ═══════════════════════════════════════════════════════ */

/* ── reset & base ────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(15,23,42,0.3) transparent;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: rgba(15,23,42,0.25); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(15,23,42,0.4); }

::selection {
  background: #0f172a;
  color: #ffffff;
}

body {
  background-color: #f8fafc;
  color: #0f172a;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  text-transform: lowercase;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── background layer & grid ─────────────────────────── */
#bg-layer {
  overflow: hidden;
  position: fixed;
  inset: 0;
  z-index: -10;
  pointer-events: none;
}

.bg-grid {
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* ── floating wireframe shapes ───────────────────────── */
.shape {
  position: absolute;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 16px;
  pointer-events: none;
}

.shape-1 {
  width: 260px;
  height: 260px;
  top: 10%;
  right: 5%;
  transform: rotate(15deg);
  animation: float-1 22s ease-in-out infinite;
}

.shape-2 {
  width: 150px;
  height: 150px;
  top: 60%;
  left: 3%;
  border-radius: 50%;
  animation: float-2 28s ease-in-out infinite;
}

.shape-3 {
  width: 100px;
  height: 300px;
  bottom: 8%;
  right: 15%;
  transform: rotate(-25deg);
  animation: float-3 32s ease-in-out infinite;
}

@keyframes float-1 {
  0%, 100% { transform: rotate(15deg) translateY(0); }
  50% { transform: rotate(22deg) translateY(-30px); }
}

@keyframes float-2 {
  0%, 100% { transform: translateY(0) translateX(0); }
  33% { transform: translateY(-20px) translateX(15px); }
  66% { transform: translateY(10px) translateX(-10px); }
}

@keyframes float-3 {
  0%, 100% { transform: rotate(-25deg) translateY(0); }
  50% { transform: rotate(-18deg) translateY(-35px); }
}

/* ── navigation ──────────────────────────────────────── */
.nav-link {
  position: relative;
  color: #475569;
  transition: color 0.3s ease;
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #0f172a;
  border-radius: 2px;
  transition: width 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.nav-link:hover,
.nav-link.active {
  color: #0f172a;
}

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

/* header scroll effect */
#site-header.scrolled {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

/* ── typed cursor animation ──────────────────────────── */
.typed-cursor {
  display: inline-block;
  color: #0f172a;
  animation: blink 1s step-end infinite;
  font-weight: 300;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ── CTA buttons ─────────────────────────────────────── */
.cta-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  cursor: pointer;
  text-decoration: none;
}

.cta-primary {
  background: #0f172a;
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.25);
}

.cta-primary:hover {
  background: #1e293b;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.35);
}

.cta-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), rgba(255,255,255,0.2), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.cta-primary:hover .cta-glow {
  opacity: 1;
}

.cta-secondary {
  background: #ffffff;
  color: #0f172a;
  border: 1px solid #cbd5e1;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}

.cta-secondary:hover {
  color: #0f172a;
  border-color: #94a3b8;
  transform: translateY(-2px);
  background: #f1f5f9;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

/* ripple effect */
.cta-btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  transform: scale(0);
  animation: ripple-anim 0.6s ease-out forwards;
  pointer-events: none;
}

@keyframes ripple-anim {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ── stat items ──────────────────────────────────────── */
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 80px;
}

/* ── about / fact cards (Dark Components) ─────────────── */
.about-card {
  background: #0f172a;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 35px rgba(15, 23, 42, 0.15);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.fact-card {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.12);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.about-card:hover {
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-3px);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.25);
}

.fact-card:hover {
  border-color: rgba(255,255,255,0.25);
  background: #0f172a;
  transform: translateX(4px);
}

/* ── skill marquee (Unlimited Continuous Scroll) ─────── */
.marquee-container {
  width: 100%;
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, black 6%, black 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, black 6%, black 94%, transparent);
}

@media (min-width: 1024px) {
  .marquee-container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

.marquee-track {
  display: flex;
  gap: 16px;
  width: max-content;
  will-change: transform;
}

.scroll-left {
  animation: marquee-left 25s linear infinite !important;
}

.scroll-right {
  animation: marquee-right 25s linear infinite !important;
}

@keyframes marquee-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes marquee-right {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}

/* Unlimited continuous scroll - never pauses */
.marquee-container:hover .marquee-track {
  animation-play-state: running;
}

.skill-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0f172a;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #f8fafc;
  white-space: nowrap;
  cursor: default;
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.12);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  flex-shrink: 0;
}

.skill-chip:hover {
  border-color: rgba(255,255,255,0.3);
  background: #1e293b;
  color: #ffffff;
  transform: scale(1.04);
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.25);
}

.skill-icon {
  width: 22px;
  height: 22px;
  filter: grayscale(0%);
  opacity: 0.9;
  transition: all 0.3s ease;
}

.skill-chip:hover .skill-icon {
  opacity: 1;
  transform: scale(1.1);
}

.invert-icon {
  filter: grayscale(100%) invert(1);
  opacity: 0.9;
}

.skill-chip:hover .invert-icon {
  filter: grayscale(0%) invert(1);
  opacity: 1;
}

/* ── education cards (Dark Component) ───────────────── */
.edu-card {
  background: #0f172a;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.edu-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateX(4px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.22);
}

/* ── social links (Dark Component) ──────────────────── */
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0f172a;
  color: #f8fafc;
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.12);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.social-link:hover {
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
  background: #1e293b;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.25);
}

/* ── photo card (Dark Component) ─────────────────────── */
.photo-card {
  border: 1px solid #334155;
  background: #0f172a;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.photo-card:hover {
  border-color: #64748b;
  transform: translateY(-4px);
  box-shadow: 0 28px 65px rgba(15, 23, 42, 0.35);
}

/* ── scroll reveal ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1),
              transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── projects page cards (Dark Component) ───────────── */
.project-card {
  position: relative;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0f172a;
  color: #f8fafc;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.project-card:hover {
  border-color: rgba(255, 255, 255, 0.28);
  transform: translateY(-4px);
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.25);
}

.project-card .project-thumb {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  transition: all 0.4s ease;
}

.project-card:hover .project-thumb {
  border-color: rgba(255, 255, 255, 0.2);
}

.project-card .project-body {
  padding: 24px;
}

.tag-chip {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.6875rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
}

.project-card:hover .tag-chip {
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
}

/* ── achievement cards (Dark Component) ─────────────── */
.achievement-card {
  position: relative;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0f172a;
  color: #f8fafc;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.achievement-card:hover {
  border-color: rgba(255, 255, 255, 0.28);
  transform: translateY(-3px);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.22);
}

.achievement-card .medal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.medal-gold { background: rgba(234,179,8,0.2); border: 1px solid rgba(234,179,8,0.4); }
.medal-silver { background: rgba(148,163,184,0.2); border: 1px solid rgba(148,163,184,0.4); }
.medal-bronze { background: rgba(217,119,6,0.2); border: 1px solid rgba(217,119,6,0.4); }

/* ── page-specific hero (subpages) ───────────────────── */
.page-hero {
  padding-top: 8rem;
  padding-bottom: 4rem;
}

/* ── responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .shape { display: none; }
  
  .skill-chip {
    padding: 10px 16px;
    font-size: 0.75rem;
  }
  
  .skill-icon {
    width: 18px;
    height: 18px;
  }
}──────────────────────────── */
.achievement-card {
  position: relative;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(18,18,20,0.7);
  backdrop-filter: blur(8px);
  padding: 28px;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.achievement-card:hover {
  border-color: rgba(255,255,255,0.12);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.achievement-card .medal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.medal-gold { background: rgba(234,179,8,0.1); border: 1px solid rgba(234,179,8,0.2); }
.medal-silver { background: rgba(148,163,184,0.1); border: 1px solid rgba(148,163,184,0.2); }
.medal-bronze { background: rgba(217,119,6,0.1); border: 1px solid rgba(217,119,6,0.2); }

/* ── page-specific hero (subpages) ───────────────────── */
.page-hero {
  padding-top: 8rem;
  padding-bottom: 4rem;
}

/* ── responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .shape { display: none; }
  
  .skill-chip {
    padding: 10px 16px;
    font-size: 0.75rem;
  }
  
  .skill-icon {
    width: 18px;
    height: 18px;
  }
}