/* ========================================
   Sunny Y2K Personal Dashboard
   Light theme · Glass cards · Soft blobs
   ======================================== */

/* ---- Google Fonts (All Open Source / SIL OFL) ---- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;700&display=swap');

/* ---- CSS Variables ---- */
:root {
  /* Backgrounds */
  --bg-page: linear-gradient(135deg, #e0f7fa 0%, #fce4ec 30%, #f3e5f5 60%, #fff8e1 100%);
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-card-solid: #ffffff;
  --bg-glass-border: rgba(255, 255, 255, 0.85);

  /* Sunny Y2K Accents */
  --accent-cyan: #22d3ee;
  --accent-cyan-dark: #06b6d4;
  --accent-pink: #f472b6;
  --accent-pink-dark: #ec4899;
  --accent-purple: #c084fc;
  --accent-purple-dark: #a855f7;
  --accent-teal: #2dd4bf;
  --accent-yellow: #fbbf24;
  --accent-lime: #a3e635;

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

  /* Fonts */
  --font-display: 'Outfit', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-body: 'Outfit', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Noto Sans SC', monospace;

  /* Radius */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(30, 41, 59, 0.06);
  --shadow-md: 0 8px 24px rgba(30, 41, 59, 0.08), 0 2px 6px rgba(30, 41, 59, 0.04);
  --shadow-lg: 0 12px 40px rgba(30, 41, 59, 0.12), 0 4px 12px rgba(30, 41, 59, 0.06);
  --shadow-glow-cyan: 0 0 30px rgba(34, 211, 238, 0.25);
  --shadow-glow-pink: 0 0 30px rgba(244, 114, 182, 0.25);
  --shadow-glow-purple: 0 0 30px rgba(192, 132, 252, 0.25);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-cyan) transparent;
}

body {
  font-family: var(--font-body);
  background: var(--bg-page);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent-pink);
  color: #fff;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-pink));
  border-radius: 3px;
}

/* ---- Background Blobs ---- */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

.blob-1 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent-cyan), transparent 70%);
  top: -100px; left: -100px;
  animation: float-blob 10s ease-in-out infinite;
}

.blob-2 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, var(--accent-pink), transparent 70%);
  top: 20%; right: -80px;
  animation: float-blob 12s ease-in-out infinite reverse;
}

.blob-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--accent-purple), transparent 70%);
  bottom: 10%; left: 10%;
  animation: float-blob 14s ease-in-out infinite;
}

.blob-4 {
  width: 250px; height: 250px;
  background: radial-gradient(circle, var(--accent-yellow), transparent 70%);
  bottom: -50px; right: 20%;
  animation: float-blob 11s ease-in-out infinite reverse;
}

@keyframes float-blob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ---- Noise Texture Overlay ---- */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ---- Navigation ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 2.5rem;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-primary);
}

.brand-blob {
  width: 32px; height: 32px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  box-shadow: var(--shadow-glow-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

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

.nav-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.4rem 0.2rem;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-pink));
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
  color: var(--text-primary);
  outline: none;
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: var(--text-inverse);
  text-decoration: none;
  letter-spacing: 1px;
  box-shadow: var(--shadow-glow-cyan);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.lang-switch:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(34, 211, 238, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-pink));
  transition: all 0.3s ease;
}

/* ---- Page Layout ---- */
.page-container {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* ---- Sidebar (Left) ---- */
.sidebar {
  position: sticky;
  top: 5.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1.5px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-md);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Profile Card */
.profile-photo-wrap {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto 1.2rem;
}

.profile-ring {
  position: absolute;
  inset: -6px;
  border-radius: var(--radius-full);
  background: conic-gradient(from 0deg, var(--accent-cyan), var(--accent-pink), var(--accent-purple), var(--accent-cyan));
  animation: spin-slow 8s linear infinite;
  opacity: 0.7;
}

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

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.profile-photo {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: #f1f5f9;
  border: 3px solid white;
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.profile-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 0.4rem;
}

.profile-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: 1px;
  margin-bottom: 0.2rem;
}

.profile-name .highlight {
  background: linear-gradient(135deg, var(--accent-cyan-dark), var(--accent-pink-dark), var(--accent-purple-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.profile-title {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 1rem;
}

.profile-bio {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: center;
}

/* Contact Card */
.card-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid transparent;
  transition: all 0.3s ease;
  font-size: 0.88rem;
}

.contact-item:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  transform: translateX(4px);
  box-shadow: var(--shadow-glow-cyan);
}

.contact-icon {
  width: 28px; height: 28px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: white;
  flex-shrink: 0;
}

/* Interests Card */
.interests-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.interest-pill {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  background: rgba(255, 255, 255, 0.6);
  border: 1.5px solid var(--pill-color);
  color: var(--pill-color);
  transition: all 0.3s ease;
  cursor: default;
}

.interest-pill:hover {
  background: var(--pill-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--pill-color) 30%, transparent);
}

/* ---- Main Content (Right) ---- */
.main-content {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
}

.section-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: white;
  box-shadow: var(--shadow-glow-cyan);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.section-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent-cyan-dark);
  font-weight: 700;
}

/* ---- Activity Feed ---- */
.activity-feed {
  background: var(--bg-card);
  border: 1.5px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.5rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
}

.activity-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}

.activity-header .pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-lime);
  box-shadow: 0 0 8px var(--accent-lime);
  animation: blink 2s ease-in-out infinite;
}

.activity-header span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.activity-row {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

.activity-row:last-child {
  border-bottom: none;
}

.activity-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 88px;
}

.activity-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---- Article Cards ---- */
.articles-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.article-card {
  display: flex;
  gap: 1.2rem;
  background: var(--bg-card);
  border: 1.5px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 1.3rem 1.5rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  transform: translateX(6px);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan), var(--shadow-md);
}

.article-date-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: white;
  font-family: var(--font-mono);
  text-align: center;
}

.article-date-box .day {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

.article-date-box .month {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.9;
}

.article-info {
  flex: 1;
  min-width: 0;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.3rem;
}

.article-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(244, 114, 182, 0.12);
  color: var(--accent-pink-dark);
  letter-spacing: 0.5px;
}

.article-tag.tech {
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent-cyan-dark);
}

.article-tag.research {
  background: rgba(192, 132, 252, 0.12);
  color: var(--accent-purple-dark);
}

.article-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---- Project Cards ---- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
}

.project-card {
  background: var(--bg-card);
  border: 1.5px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  transition: all 0.4s ease;
  text-decoration: none;
  color: inherit;
}

.project-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: var(--accent-pink);
  box-shadow: var(--shadow-glow-pink), var(--shadow-md);
}

.project-header {
  padding: 1.2rem 1.2rem 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}

.project-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow-pink);
}

.project-icon.cyan {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
  box-shadow: var(--shadow-glow-cyan);
}

.project-icon.yellow {
  background: linear-gradient(135deg, var(--accent-yellow), #f97316);
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.3);
}

.project-icon.lime {
  background: linear-gradient(135deg, var(--accent-lime), var(--accent-teal));
  box-shadow: 0 0 20px rgba(163, 230, 53, 0.3);
}

.project-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.project-desc {
  padding: 0 1.2rem 0.8rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.project-footer {
  padding: 0.7rem 1.2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.p-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(30, 41, 59, 0.05);
  color: var(--text-muted);
  letter-spacing: 0.3px;
}

.project-arrow {
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: transform 0.3s ease, color 0.3s ease;
}

.project-card:hover .project-arrow {
  transform: translateX(4px);
  color: var(--accent-pink);
}

/* Project Progress */
.project-progress {
  padding: 0 1.2rem 0.6rem;
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.05);
  overflow: hidden;
  margin-bottom: 0.4rem;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  transition: width 0.6s ease;
}

.progress-bar-fill.done {
  background: linear-gradient(90deg, var(--accent-lime), var(--accent-teal));
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.progress-percent {
  font-weight: 700;
  color: var(--accent-purple-dark);
}

.progress-percent.done {
  color: var(--accent-teal);
}

.progress-dates {
  font-size: 0.65rem;
}

/* ---- Footer ---- */
.footer {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer a {
  color: var(--accent-cyan-dark);
  text-decoration: none;
  font-weight: 600;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 960px) {
  .page-container {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 1.5rem;
  }

  .sidebar {
    position: relative;
    top: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .profile-card {
    grid-column: 1 / -1;
  }

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

@media (max-width: 640px) {
  .navbar {
    padding: 0.8rem 1.2rem;
  }

  .nav-center {
    display: none;
  }

  .nav-center.active {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 0.5rem 0;
    box-shadow: var(--shadow-md);
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
  }

  .nav-center.active .nav-link {
    padding: 0.8rem 1.5rem;
    width: 100%;
    text-align: center;
  }

  .nav-toggle {
    display: flex;
  }

  .page-container {
    padding: 1rem;
    gap: 1.5rem;
  }

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

  .card {
    padding: 1.3rem;
  }

  .article-card {
    flex-direction: column;
    gap: 0.8rem;
  }

  .article-date-box {
    flex-direction: row;
    gap: 0.4rem;
    align-self: flex-start;
    padding: 0.3rem 0.7rem;
  }

  .article-date-box .day,
  .article-date-box .month {
    font-size: 0.75rem;
  }

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

  .interests-tags {
    gap: 0.4rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}