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

:root {
  --violet: #7c3aed;
  --purple: #9333ea;
  --pink: #ec4899;
  --orange: #f97316;
  --yellow: #fbbf24;
  --dark: #1a1a2e;
  --dark-surface: #16213e;
  --light: #f8fafc;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --gradient-primary: linear-gradient(135deg, var(--violet), var(--pink), var(--orange));
  --gradient-bg: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--dark);
  color: var(--light);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Animated Background ===== */
.bg-animated {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(-45deg, #0f0c29, #302b63, #24243e, #1a1a2e);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  font-weight: 500;
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition);
}

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

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

.nav-links a.active {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.25rem;
}

.nav-toggle span {
  width: 28px;
  height: 3px;
  background: var(--light);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Portrait ===== */
.hero-portrait {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid transparent;
  background-image: var(--gradient-primary);
  background-origin: border-box;
  background-clip: content-box, border-box;
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.35);
  margin-bottom: 1.5rem;
  position: relative;
  animation: fadeInUp 0.6s ease-out;
}

/* ===== Hero Section ===== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - 64px);
  padding: 2rem;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.2), transparent 70%);
  border-radius: 50%;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.15); opacity: 0.8; }
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  position: relative;
  animation: fadeInUp 0.8s ease-out;
}

.hero .subtitle {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  color: rgba(248, 250, 252, 0.7);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.subtitle-main {
  display: block;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.05em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle-divider {
  display: none;
}

.subtitle-sub {
  display: block;
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(248, 250, 252, 0.45);
  margin-top: 0.35rem;
}

.btn-cta {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.btn-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.5s;
}

.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(124, 58, 237, 0.4);
}

.btn-cta:hover::before {
  left: 100%;
}

/* ===== Page Header ===== */
.page-header {
  text-align: center;
  padding: 4rem 2rem 2rem;
}

.page-header h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-header p {
  color: rgba(248, 250, 252, 0.6);
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

/* ===== Content Sections ===== */
.section {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* ===== About Page ===== */
.about-text {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 3rem;
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(248, 250, 252, 0.85);
}

.skills-section h2,
.experience-section h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.skill-tag {
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  transition: transform var(--transition), box-shadow var(--transition);
}

.skill-tag:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.skill-tag:nth-child(6n+1) { background: var(--violet); }
.skill-tag:nth-child(6n+2) { background: var(--pink); }
.skill-tag:nth-child(6n+3) { background: var(--orange); }
.skill-tag:nth-child(6n+4) { background: #06b6d4; }
.skill-tag:nth-child(6n+5) { background: #10b981; }
.skill-tag:nth-child(6n+6) { background: #f43f5e; }

.experience-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.experience-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  border-left: 4px solid;
  border-image: var(--gradient-primary) 1;
  transition: transform var(--transition), box-shadow var(--transition);
}

.experience-card:hover {
  transform: translateX(8px);
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.15);
}

.experience-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.experience-card .period {
  font-size: 0.85rem;
  color: var(--pink);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.experience-card p {
  color: rgba(248, 250, 252, 0.7);
  font-size: 0.95rem;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
}

.contact-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(124, 58, 237, 0.2);
}

.contact-card .icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.8rem;
}

.contact-card:nth-child(1) .icon { background: linear-gradient(135deg, var(--violet), var(--purple)); }
.contact-card:nth-child(2) .icon { background: linear-gradient(135deg, #e44d60, #f77b54); }
.contact-card:nth-child(3) .icon { background: linear-gradient(135deg, #0077b5, #00a0dc); }
.contact-card:nth-child(4) .icon { background: linear-gradient(135deg, #6364ff, #563acc); }
.contact-card:nth-child(5) .icon { background: linear-gradient(135deg, #f97316, #ec4899); }
.contact-card:nth-child(6) .icon { background: linear-gradient(135deg, #3a76f0, #2058d0); }

.contact-qr {
  width: 140px;
  height: 140px;
  border-radius: 12px;
  margin: 0.75rem auto 1.25rem;
  display: block;
  background: #fff;
  padding: 6px;
}

.contact-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.contact-card p {
  color: rgba(248, 250, 252, 0.6);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.contact-link {
  display: inline-block;
  padding: 0.6rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:nth-child(1) .contact-link { background: var(--gradient-primary); color: #fff; }
.contact-card:nth-child(2) .contact-link { background: linear-gradient(135deg, #e44d60, #f77b54); color: #fff; }
.contact-card:nth-child(3) .contact-link { background: linear-gradient(135deg, #0077b5, #00a0dc); color: #fff; }
.contact-card:nth-child(4) .contact-link { background: linear-gradient(135deg, #6364ff, #563acc); color: #fff; }
.contact-card:nth-child(5) .contact-link { background: linear-gradient(135deg, #f97316, #ec4899); color: #fff; }
.contact-card:nth-child(6) .contact-link { background: linear-gradient(135deg, #3a76f0, #2058d0); color: #fff; }

.contact-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* ===== RSS Link ===== */
.rss-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #f97316;
  border: 1px solid rgba(249, 115, 22, 0.4);
  background: rgba(249, 115, 22, 0.1);
  transition: background var(--transition), transform var(--transition);
}

.rss-link:hover {
  background: rgba(249, 115, 22, 0.2);
  transform: translateY(-2px);
}

.rss-link svg {
  flex-shrink: 0;
}

/* ===== Blog Page ===== */
.blog-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.blog-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(124, 58, 237, 0.2);
}

.blog-card-date {
  font-size: 0.8rem;
  color: var(--pink);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.blog-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.blog-tag {
  padding: 0.25rem 0.8rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(124, 58, 237, 0.25);
  color: #c4b5fd;
  border: 1px solid rgba(124, 58, 237, 0.4);
}

.blog-card-excerpt {
  color: rgba(248, 250, 252, 0.7);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.blog-read-more {
  display: inline-block;
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: opacity var(--transition);
}

.blog-read-more:hover {
  opacity: 0.75;
}

/* ===== Blog Post Detail ===== */
.blog-post {
  max-width: 780px;
  margin: 0 auto;
  padding: 2rem;
}

.blog-post-header {
  margin-bottom: 2.5rem;
}

.blog-post-header h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.blog-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.blog-post-date {
  font-size: 0.85rem;
  color: var(--pink);
  font-weight: 600;
}

.blog-post-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: rgba(248, 250, 252, 0.85);
}

.blog-post-content p {
  margin-bottom: 1.5rem;
}

.blog-post-content h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--light);
}

.blog-post-content em {
  font-style: italic;
  color: rgba(248, 250, 252, 0.7);
}

.blog-back {
  display: inline-block;
  margin-bottom: 2rem;
  font-weight: 600;
  font-size: 0.95rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: opacity var(--transition);
}

.blog-back:hover {
  opacity: 0.75;
}

/* ===== Videos Page ===== */
.youtube-channel-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.5rem 1.4rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #ff0033;
  border: 1px solid rgba(255, 0, 51, 0.4);
  background: rgba(255, 0, 51, 0.1);
  transition: background var(--transition), transform var(--transition);
}

.youtube-channel-link:hover {
  background: rgba(255, 0, 51, 0.2);
  transform: translateY(-2px);
}

.youtube-channel-link svg {
  flex-shrink: 0;
}

.video-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.video-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(124, 58, 237, 0.2);
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.video-title {
  font-size: 1.3rem;
  font-weight: 700;
  padding: 1.25rem 1.5rem 0.25rem;
}

.video-date {
  font-size: 0.8rem;
  color: var(--pink);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0 1.5rem 1.25rem;
}

.video-loading {
  text-align: center;
  color: rgba(248, 250, 252, 0.5);
  padding: 3rem;
  font-size: 1rem;
}

.video-loading a {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

/* ===== Legal Pages ===== */
.legal-content {
  max-width: 780px;
}

.legal-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--light);
}

.legal-content p {
  color: rgba(248, 250, 252, 0.8);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.legal-content ul {
  color: rgba(248, 250, 252, 0.8);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
}

.legal-content a {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--glass-border);
  color: rgba(248, 250, 252, 0.4);
  font-size: 0.85rem;
}

.footer-links {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(248, 250, 252, 0.5);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: rgba(248, 250, 252, 0.8);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    flex-direction: column;
    background: rgba(22, 33, 62, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transition: right var(--transition);
    border-left: 1px solid var(--glass-border);
  }

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

  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
  }

  .nav-overlay.open {
    display: block;
  }

  .section {
    padding: 2rem 1.25rem;
  }

  .contact-grid {
    padding: 1rem;
  }
}