/* ==========================================================================
   1. CSS VARIABLES (PALET WARNA SESUAI REF: ESPRESSO & PALE OAK)
   Gunakan variabel ini jika ingin mengganti tema warna secara cepat!
   ========================================================================== */
:root {
  /* Warna Utama dari gambar referensi Canva */
  --espresso: #3C2415;         /* Deep rich brown (RGB: 60, 36, 21) */
  --espresso-light: #52341F;   /* Varian espresso yang sedikit lebih terang */
  --pale-oak: #DDD9CE;         /* Krem lembut elegan (RGB: 221, 217, 206) */
  --pale-oak-light: #F4F2EB;   /* Varian pale oak sangat lembut untuk latar belakang */
  
  /* Warna Pendukung */
  --bg-body: #F9F8F5;          /* Latar belakang utama halaman */
  --bg-card: #FFFFFF;          /* Latar belakang kartu/kontainer */
  --text-main: #3C2415;        /* Warna teks utama */
  --text-muted: #6E5C50;       /* Warna teks sekunder (subtle & lembut) */
  --border-subtle: rgba(60, 36, 21, 0.12); /* Garis tepi tipis dan estetik */
  --shadow-soft: 0 10px 30px -10px rgba(60, 36, 21, 0.1);
  --shadow-hover: 0 18px 40px -12px rgba(60, 36, 21, 0.18);
  
  /* Tipografi */
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-serif: 'Playfair Display', serif;
  
  /* Radius & Transisi */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   2. RESET & PENGATURAN DASAR HALAMAN
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   3. NAVIGATION BAR (NAVBAR)
   Tata letak navbar mengambang (floating) dengan efek kaca (glassmorphism)
   ========================================================================== */
.navbar {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
}

.nav-container {
  max-width: 1000px;
  margin: 0 auto;
  background: rgba(249, 248, 245, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 12px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 8px 24px rgba(60, 36, 21, 0.05);
  transition: var(--transition);
}

.nav-logo {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--espresso);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.3px;
}

.nav-logo span {
  display: inline-block;
  width: 9px;
  height: 9px;
  background-color: var(--espresso);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--espresso);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--espresso);
  transition: var(--transition);
  border-radius: 2px;
}

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

.nav-cta {
  background-color: var(--espresso);
  color: var(--pale-oak-light);
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  border: 1px solid var(--espresso);
}

.nav-cta:hover {
  background-color: var(--espresso-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(60, 36, 21, 0.2);
}

/* Tombol menu untuk tampilan layar mobile */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--espresso);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 4px;
}

/* ==========================================================================
   4. HERO SECTION (BAGIAN PERTAMA / UTAMA)
   Tata letak 2 kolom: Teks Sapaan di kiri & Frame Foto Estetik di kanan
   ========================================================================== */
.hero {
  padding-top: 150px;
  padding-bottom: 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
}

/* Badge status mahasiswa santai */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--pale-oak);
  color: var(--espresso);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 22px;
  border: 1px solid rgba(60, 36, 21, 0.15);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: #2E7D32; /* Hijau segar: aktif belajar */
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.2);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-greeting {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--espresso);
  margin-bottom: 18px;
}

.hero-title .serif-highlight {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 600;
  color: var(--espresso-light);
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 530px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--espresso);
  color: #FFFFFF;
  border: 1px solid var(--espresso);
  box-shadow: 0 8px 20px rgba(60, 36, 21, 0.16);
}

.btn-primary:hover {
  background-color: var(--espresso-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(60, 36, 21, 0.22);
}

.btn-secondary {
  background-color: var(--pale-oak-light);
  color: var(--espresso);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--pale-oak);
  border-color: rgba(60, 36, 21, 0.25);
  transform: translateY(-2px);
}

/* FRAME FOTO PROFIL ESTETIK */
.hero-photo-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.photo-outer-ring {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  padding: 12px;
  background: linear-gradient(135deg, var(--pale-oak), #ECE8DD);
  box-shadow: var(--shadow-soft), inset 0 0 15px rgba(60, 36, 21, 0.05);
  border: 1.5px solid rgba(60, 36, 21, 0.12);
  transition: var(--transition);
}

.photo-outer-ring:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}

.photo-inner-frame {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--bg-card);
  border: 3px solid #FFFFFF;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.photo-outer-ring:hover .profile-image {
  transform: scale(1.06);
}

/* Floating tag kecil di sekitar foto */
.photo-floating-pill {
  position: absolute;
  bottom: 12px;
  right: 15px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--espresso);
  box-shadow: 0 6px 18px rgba(60, 36, 21, 0.1);
  display: flex;
  align-items: center;
  gap: 6px;
  animation: floatBadge 3.5s ease-in-out infinite alternate;
}

@keyframes floatBadge {
  0% { transform: translateY(0); }
  100% { transform: translateY(-7px); }
}

/* ==========================================================================
   5. GENERAL SECTION HEADER
   Format judul perbagian yang rapi dan konsisten
   ========================================================================== */
.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 52px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--espresso);
  background-color: var(--pale-oak);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--espresso);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-title .serif-highlight {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 600;
}

.section-subtitle {
  font-size: 0.98rem;
  color: var(--text-muted);
}

/* ==========================================================================
   6. ABOUT ME SECTION
   Gaya bahasa santai, ramah mahasiswa dengan kartu informasi cepat
   ========================================================================== */
.about-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 42px;
  box-shadow: var(--shadow-soft);
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.about-story h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--espresso);
  margin-bottom: 16px;
  line-height: 1.3;
}

.about-story p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.98rem;
}

.about-story p:last-of-type {
  margin-bottom: 0;
}

.quick-facts {
  background-color: var(--pale-oak-light);
  border: 1px solid rgba(60, 36, 21, 0.08);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.fact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.fact-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background-color: var(--pale-oak);
  color: var(--espresso);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.fact-text .fact-label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.fact-text .fact-value {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--espresso);
}

/* ==========================================================================
   7. TECH STACK (SKILL SECTION)
   Desain badge/card rapi dengan sentuhan warna harmonis
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}

.skill-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  text-align: center;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(60, 36, 21, 0.03);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: transparent;
  transition: var(--transition);
}

.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(60, 36, 21, 0.25);
}

.skill-card:hover::before {
  background-color: var(--espresso);
}

.skill-icon-box {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px auto;
  background-color: var(--pale-oak-light);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--espresso);
  transition: var(--transition);
}

.skill-card:hover .skill-icon-box {
  background-color: var(--pale-oak);
  transform: scale(1.1);
}

.skill-name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--espresso);
  margin-bottom: 4px;
}

.skill-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   8. PROJECTS / JOURNEY SECTION
   3 dummy cards untuk proyek latihan/kampus
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(60, 36, 21, 0.25);
}

.project-cover {
  height: 180px;
  background: linear-gradient(135deg, #ECE7DC 0%, #DDD9CE 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px;
}

.project-mockup-badge {
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--espresso);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(60, 36, 21, 0.1);
  box-shadow: 0 4px 12px rgba(60, 36, 21, 0.08);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tech-tag {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--espresso);
  background-color: var(--pale-oak-light);
  border: 1px solid rgba(60, 36, 21, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.project-title {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--espresso);
  margin-bottom: 8px;
  line-height: 1.35;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(60, 36, 21, 0.06);
}

.project-link {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--espresso);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition);
}

.project-link:hover {
  color: var(--espresso-light);
  transform: translateX(3px);
}

.project-status {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   9. CONTACT / FOOTER SECTION
   Footer simpel dengan palet warna Espresso pekat yang elegan & kontras
   ========================================================================== */
.footer {
  background-color: var(--espresso);
  color: var(--pale-oak-light);
  padding: 70px 0 35px 0;
  margin-top: 40px;
  border-top: 1px solid rgba(221, 217, 206, 0.15);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 50px;
}

.footer-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  background-color: rgba(221, 217, 206, 0.15);
  color: var(--pale-oak);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.footer-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
  max-width: 600px;
  line-height: 1.25;
}

.footer-subtitle {
  font-size: 1rem;
  color: rgba(221, 217, 206, 0.85);
  max-width: 520px;
  margin-bottom: 32px;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(221, 217, 206, 0.1);
  color: #FFFFFF;
  padding: 11px 22px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid rgba(221, 217, 206, 0.2);
  transition: var(--transition);
}

.social-btn:hover {
  background-color: var(--pale-oak);
  color: var(--espresso);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.footer-bottom {
  border-top: 1px solid rgba(221, 217, 206, 0.12);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  color: rgba(221, 217, 206, 0.65);
}

/* ==========================================================================
   10. ANIMASI INTERAKTIF & SMOOTH SCROLL (JAVASCRIPT OBSERVER)
   ========================================================================== */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ==========================================================================
   11. MEDIA QUERIES (DESAIN RESPONSIF UNTUK TABLET & HP)
   ========================================================================== */
@media (max-width: 868px) {
  .hero {
    padding-top: 120px;
    padding-bottom: 60px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-description {
    margin: 0 auto 28px auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .photo-outer-ring {
    width: 260px;
    height: 260px;
  }

  .about-card {
    grid-template-columns: 1fr;
    padding: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .navbar {
    top: 10px;
    padding: 0 16px;
  }

  .nav-container {
    padding: 10px 18px;
  }

  .nav-links {
    display: none; /* Disembunyikan saat mobile, di-toggle lewat JS */
    position: absolute;
    top: 65px;
    left: 16px;
    right: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    flex-direction: column;
    padding: 18px;
    box-shadow: 0 12px 30px rgba(60, 36, 21, 0.15);
    gap: 16px;
  }

  .nav-links.show-mobile {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero-title {
    font-size: 2.3rem;
  }

  .section-title {
    font-size: 1.85rem;
  }

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