/* ==========================================================================
   Presora Official Website - Design System & Stylesheet
   Palette: Dark Charcoal (#17191E, #22252A), Electric Blue (#6C8CFF),
            Soft Violet (#A78BFA), Ice Blue (#A5D8FF)
   ========================================================================== */

:root {
  --bg-deep: #17191E;
  --bg-surface: #22252A;
  --bg-card: #282B32;
  --bg-card-hover: #30343D;
  --bg-input: #1C1F25;
  
  --primary-blue: #6C8CFF;
  --primary-blue-glow: rgba(108, 140, 255, 0.28);
  --secondary-violet: #A78BFA;
  --secondary-violet-glow: rgba(167, 139, 250, 0.25);
  --highlight-ice: #A5D8FF;
  
  --status-hadir: #6C8CFF;
  --status-sakit: #FBBF24;
  --status-izin: #A78BFA;
  --status-alfa: #FB7185;
  
  --text-primary: #F5F7FA;
  --text-secondary: #9298A5;
  --text-muted: #6B7280;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-glow: rgba(108, 140, 255, 0.35);

  --glass-bg: rgba(34, 37, 42, 0.75);
  --glass-blur: blur(14px);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 35px rgba(108, 140, 255, 0.18);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-main: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-main);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 15% 20%, rgba(108, 140, 255, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(167, 139, 250, 0.07) 0%, transparent 45%),
    var(--bg-deep);
}

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

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

a:hover {
  color: var(--highlight-ice);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-spacing {
  padding-top: 96px;
  padding-bottom: 96px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
}

.badge-primary {
  background: rgba(108, 140, 255, 0.12);
  border-color: rgba(108, 140, 255, 0.3);
  color: var(--highlight-ice);
}

.badge-glow {
  box-shadow: 0 0 16px var(--primary-blue-glow);
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary-blue);
  box-shadow: 0 0 8px var(--primary-blue);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Navigation Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.03);
  padding: 2px;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-name span {
  color: var(--primary-blue);
}

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

.nav-link {
  color: var(--text-secondary);
  font-size: 0.925rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-blue);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--primary-blue);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue), #506fea);
  color: #FFFFFF;
  box-shadow: 0 4px 14px var(--primary-blue-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #7b98ff, var(--primary-blue));
  box-shadow: 0 6px 20px rgba(108, 140, 255, 0.45);
  transform: translateY(-1px);
  color: #FFFFFF;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary-blue);
  color: var(--highlight-ice);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px 24px;
}

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

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-links .nav-link {
  font-size: 1rem;
}

/* Hero Section */
.hero-section {
  padding-top: 72px;
  padding-bottom: 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-top: 20px;
  margin-bottom: 22px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #FFFFFF 20%, var(--primary-blue) 70%, var(--secondary-violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 34px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 40px;
}

.hero-trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.trust-icon {
  color: var(--primary-blue);
  font-size: 1rem;
}

/* Hero Mockup / App Preview */
.hero-preview {
  position: relative;
}

.preview-card-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.preview-card-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-blue), var(--secondary-violet), transparent);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.preview-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(108, 140, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 0.85rem;
}

.preview-sheet-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.12);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.25);
  display: flex;
  align-items: center;
  gap: 6px;
}

.sheet-pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34D399;
}

.preview-attendance-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.preview-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.preview-row:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
}

.preview-row-info {
  display: flex;
  flex-direction: column;
}

.preview-student-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.preview-student-meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.preview-pills {
  display: flex;
  gap: 6px;
}

.status-pill {
  font-size: 0.725rem;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid transparent;
}

.pill-hadir {
  background: rgba(108, 140, 255, 0.15);
  color: var(--status-hadir);
  border-color: rgba(108, 140, 255, 0.4);
}

.pill-sakit {
  background: rgba(251, 191, 36, 0.12);
  color: var(--status-sakit);
}

.pill-izin {
  background: rgba(167, 139, 250, 0.15);
  color: var(--status-izin);
}

.pill-alfa {
  background: rgba(251, 113, 133, 0.15);
  color: var(--status-alfa);
}

.preview-footer-note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.775rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-top: 14px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  background: var(--bg-card);
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(108, 140, 255, 0.12);
  border: 1px solid rgba(108, 140, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-blue);
  font-size: 1.5rem;
  margin-bottom: 22px;
}

.feature-card:nth-child(2) .feature-icon-box {
  background: rgba(167, 139, 250, 0.12);
  border-color: rgba(167, 139, 250, 0.25);
  color: var(--secondary-violet);
}

.feature-card:nth-child(3) .feature-icon-box {
  background: rgba(165, 216, 255, 0.12);
  border-color: rgba(165, 216, 255, 0.25);
  color: var(--highlight-ice);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-text {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Architecture & OAuth Section */
.arch-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-top: 32px;
  box-shadow: var(--shadow-md);
}

.arch-flow-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin: 36px 0;
  text-align: center;
}

.arch-node {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.arch-node-title {
  font-weight: 700;
  font-size: 1rem;
  margin-top: 10px;
  margin-bottom: 4px;
}

.arch-node-desc {
  font-size: 0.785rem;
  color: var(--text-secondary);
}

.arch-arrow {
  color: var(--primary-blue);
  font-size: 1.4rem;
  font-weight: bold;
}

/* Scope Table */
.scope-table-wrap {
  overflow-x: auto;
  margin-top: 28px;
}

.scope-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.885rem;
}

.scope-table th {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  font-weight: 700;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.scope-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.scope-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.825rem;
  color: var(--highlight-ice);
  background: rgba(0, 0, 0, 0.25);
  padding: 3px 8px;
  border-radius: 4px;
  display: inline-block;
  word-break: break-all;
}

.policy-callout {
  margin-top: 32px;
  background: rgba(108, 140, 255, 0.06);
  border-left: 4px solid var(--primary-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.65;
}

.policy-callout strong {
  color: #FFFFFF;
}

/* Contact Section */
.contact-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.contact-info h3 {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.contact-item-icon {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: rgba(108, 140, 255, 0.15);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.contact-details {
  flex: 1;
}

.contact-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.copy-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

/* Legal Pages Styling (Privacy & Terms) */
.legal-page-header {
  padding-top: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 48px;
}

.legal-meta {
  display: flex;
  gap: 24px;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.legal-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 100px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
}

.legal-toc-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.legal-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.legal-toc-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: var(--transition);
  display: block;
}

.legal-toc-link:hover {
  color: var(--primary-blue);
  padding-left: 4px;
}

.legal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.legal-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.legal-content h2:first-of-type {
  margin-top: 0;
}

.legal-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 12px;
}

.legal-content p {
  margin-bottom: 16px;
}

.legal-content ul, .legal-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.legal-content li {
  margin-bottom: 8px;
}

.legal-content strong {
  color: var(--text-primary);
}

.highlight-box {
  background: rgba(108, 140, 255, 0.08);
  border: 1px solid rgba(108, 140, 255, 0.25);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin: 20px 0;
  color: var(--text-primary);
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: #121417;
  border-top: 1px solid var(--border-subtle);
  padding-top: 64px;
  padding-bottom: 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--text-primary);
  padding-left: 3px;
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* Notification Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--primary-blue);
  box-shadow: var(--shadow-lg);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 9999;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .arch-flow-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .arch-arrow {
    transform: rotate(90deg);
  }
  .contact-card {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px;
  }
  .legal-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .legal-toc {
    position: static;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .desktop-nav, .nav-cta {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .legal-content {
    padding: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}