/* ==========================================================================
   Portofolio Analitika Data - Faiz Athallah Akhsan
   Spesifikasi: 375px - 1440px Responsive, A11y WCAG AA Kontras, Touch Target 44px
   ========================================================================== */

:root {
  /* Warna Aksen (#0b5fa5) & Turunan */
  --accent: #0b5fa5;
  --accent-hover: #08477c;
  --accent-light: #eff6fc;
  --accent-border: #bfdbfe;

  /* Latar Belakang Netral */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  
  /* Tipografi & Kontras Tinggi (Rasio >= 4.5:1 terhadap latar) */
  --text-primary: #0f172a;   /* Rasio 16.1:1 thd #fff */
  --text-secondary: #334155; /* Rasio 9.6:1 thd #fff */
  --text-muted: #475569;     /* Rasio 7.0:1 thd #fff */
  
  /* Garis Batas / Border */
  --border-color: #cbd5e1;
  --border-light: #e2e8f0;

  /* Tag Penanda TODO (Kontras Tinggi) */
  --todo-bg: #fef3c7;
  --todo-border: #f59e0b;
  --todo-text: #78350f;      /* Rasio 7.5:1 thd #fef3c7 */
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Aksesibilitas: Indikator Fokus Papan Ketik (Keyboard Focus) */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Kontainer Utama (Responsif 375px s.d. 1440px) */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ==========================================================================
   NAVIGASI / HEADER
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 64px;
}

.brand-logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px; /* Sasaran sentuh */
  padding: 0 0.5rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px; /* Sasaran sentuh min 44x44px */
  min-width: 44px;
  padding: 0.5rem 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  transition: background-color 0.2s, color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
  background-color: var(--accent-light);
}

/* ==========================================================================
   TATA LETAK SEKSI UMUM
   ========================================================================== */
.section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border-light);
}

.section-header {
  margin-bottom: 2rem;
}

.section-header h2 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.3px;
  margin-bottom: 0.35rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* ==========================================================================
   1. SEKSI PROFIL
   ========================================================================== */
.profile-card {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  background-color: var(--bg-card);
  padding: 2.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-light);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.profile-avatar-wrapper {
  flex-shrink: 0;
}

.profile-img {
  width: 170px;
  height: 170px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #ffffff;
  box-shadow: 0 4px 12px rgba(11, 95, 165, 0.18);
  display: block;
}

.badge-role {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-hover);
  background-color: var(--accent-light);
  border: 1px solid var(--accent-border);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
}

.profile-content h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 0.35rem;
  letter-spacing: -0.5px;
}

.profile-tagline {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.profile-bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.profile-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Tombol & Sasaran Sentuh (>= 44x44px) */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px; /* >44px */
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
  border: 2px solid var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-secondary:hover {
  background-color: var(--accent-light);
}

/* ==========================================================================
   2. SEKSI KEAHLIAN
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 1.75rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent-light);
}

.skill-indicator {
  color: var(--accent);
  font-size: 1.5rem;
  line-height: 1;
}

.skill-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
}

.skill-items {
  list-style: none;
}

.skill-items li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.65rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.skill-items li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* ==========================================================================
   3. SEKSI PROYEK (GRID RATA & HASIL TERUKUR MENONJOL)
   ========================================================================== */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  display: grid;
  grid-template-columns: 360px 1fr;
}

.project-media {
  background-color: var(--bg-subtle);
  border-right: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.project-thumbnail {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
  border-radius: 6px;
  border: 1px solid var(--border-light);
  background-color: #ffffff;
}

.project-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.project-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.project-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.meta-tag strong {
  color: var(--text-secondary);
}

.project-info-block {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.info-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  font-weight: 700;
  color: var(--accent-hover);
  margin-bottom: 0.25rem;
}

/* Highlight Hasil Terukur */
.metrics-card {
  background-color: var(--accent-light);
  border: 1px solid var(--accent-border);
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}

.metrics-card-title {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent-hover);
  margin-bottom: 0.75rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-number {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.metric-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Footer Kartu Proyek */
.project-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-light);
  margin-top: auto;
}

.evidence-tag {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
}

.todo-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--todo-text);
  background-color: var(--todo-bg);
  border: 1px solid var(--todo-border);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  word-break: break-word;
}

/* ==========================================================================
   4. SEKSI UNDUHAN CV
   ========================================================================== */
.cv-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.cv-card h2 {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.cv-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 1.75rem auto;
}

.btn-cv {
  min-height: 48px;
  padding: 0.85rem 2.25rem;
}

/* ==========================================================================
   5. SEKSI KONTAK
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.contact-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.contact-label {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.contact-value {
  font-size: 1rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  word-break: break-all;
  display: inline-flex;
  align-items: center;
  min-height: 44px; /* Sasaran sentuh */
}

.contact-value:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ==========================================================================
   6. SEKSI PENUTUP / FOOTER
   ========================================================================== */
.footer {
  background-color: #ffffff;
  border-top: 1px solid var(--border-light);
  padding: 2.5rem 0;
  text-align: center;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.copyright {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.footer-subtext {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIF / MEDIA QUERIES (375px s.d. 1440px)
   ========================================================================== */
@media (max-width: 900px) {
  .project-card {
    grid-template-columns: 1fr;
  }

  .project-media {
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding: 1.25rem;
  }

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

@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .nav-container {
    flex-direction: column;
    padding: 0.75rem 0;
    gap: 0.5rem;
  }

  .nav-links {
    justify-content: center;
    gap: 0.25rem;
  }

  .nav-links a {
    font-size: 0.85rem;
    padding: 0.5rem 0.6rem;
  }

  .profile-card {
    flex-direction: column;
    text-align: center;
    padding: 1.75rem 1.25rem;
    gap: 1.5rem;
  }

  .profile-actions {
    justify-content: center;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .project-content {
    padding: 1.25rem;
  }

  .project-header h3 {
    font-size: 1.2rem;
  }

  .metrics-card {
    padding: 1rem;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .metric-number {
    font-size: 1.6rem;
  }
}

/* Perangkat layar kecil (375px) */
@media (max-width: 375px) {
  .brand-logo {
    font-size: 1.05rem;
  }

  .profile-content h1 {
    font-size: 1.75rem;
  }

  .profile-tagline {
    font-size: 1rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }
}