/* ============================================
   style.css — Global Stylesheet & Design System
   E-Modul Interaktif SQL - SMK Negeri 1 Sintuk Toboh Gadang
   (Clean Borderless UI with Soft Shadows)
   ============================================ */

/* ---------- CSS Variables / Design Tokens ---------- */
:root {
  /* Colors - Modern Indigo & Emerald Palette */
  --primary:         hsl(231, 68%, 52%);   /* Indigo Modern */
  --primary-dark:    hsl(231, 68%, 42%);
  --primary-light:   hsl(231, 75%, 64%);
  --primary-subtle:  hsl(231, 70%, 96%);
  --primary-glow:    hsla(231, 68%, 52%, 0.25);

  --secondary:       hsl(165, 80%, 38%);   /* Mint Emerald */
  --secondary-dark:  hsl(165, 80%, 30%);
  --secondary-light: hsl(165, 80%, 48%);
  --secondary-subtle:hsl(165, 60%, 95%);

  --accent:          hsl(38, 92%, 50%);    /* Amber / Warning */
  --accent-light:    hsl(38, 92%, 60%);

  /* Neutrals */
  --bg-body:         hsl(210, 20%, 98%);   /* Ultra-clean Bright Slate White */
  --bg-card:         #ffffff;
  --bg-surface:      hsl(215, 20%, 95%);
  --bg-surface-2:    hsl(215, 18%, 91%);

  /* Text Colors - High Contrast & Maximum Readability */
  --text-primary:    hsl(222, 47%, 11%);   /* Slate 950 - Deep Rich Black */
  --text-secondary:  hsl(215, 25%, 32%);   /* Slate 700 - Clear Dark Gray */
  --text-muted:      hsl(215, 18%, 48%);   /* Slate 500 */
  --text-on-primary: #ffffff;

  /* Status Colors */
  --success:         hsl(152, 65%, 40%);
  --success-subtle:  hsl(152, 65%, 94%);
  --error:           hsl(356, 75%, 53%);
  --error-subtle:    hsl(356, 75%, 95%);
  --warning:         hsl(38, 92%, 50%);
  --warning-subtle:  hsl(38, 92%, 94%);
  --info:            hsl(205, 85%, 50%);
  --info-subtle:     hsl(205, 85%, 95%);

  /* Borders & Dividers */
  --border:          hsl(220, 18%, 88%);
  --border-light:    hsl(220, 18%, 93%);
  --border-focus:    var(--primary);

  /* Shadows - Multi-Layer Elevation */
  --shadow-xs:       0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-sm:       0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md:       0 6px 18px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg:       0 14px 32px -4px rgba(0, 0, 0, 0.06);
  --shadow-xl:       0 24px 48px -12px rgba(0, 0, 0, 0.08);

  /* Typography */
  --font-family:     'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-code:       'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes */
  --fs-xs:   0.75rem;     /* 12px */
  --fs-sm:   0.875rem;    /* 14px */
  --fs-base: 1rem;        /* 16px */
  --fs-md:   1.125rem;    /* 18px */
  --fs-lg:   1.25rem;     /* 20px */
  --fs-xl:   1.5rem;      /* 24px */
  --fs-2xl:  1.875rem;    /* 30px */
  --fs-3xl:  2.25rem;     /* 36px */

  /* Spacing */
  --space-xs:  0.25rem;   /* 4px */
  --space-sm:  0.5rem;    /* 8px */
  --space-md:  1rem;      /* 16px */
  --space-lg:  1.5rem;    /* 24px */
  --space-xl:  2rem;      /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */

  /* Border Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-body);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: hsl(220, 15%, 80%);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: hsl(220, 15%, 70%);
}

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

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

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  list-style: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.015em;
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl);  }
h4 { font-size: var(--fs-lg);  }
p  { color: var(--text-primary); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.65rem 1.4rem;
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.2;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 44px;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--text-on-primary);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px hsla(231, 68%, 52%, 0.35);
  color: var(--text-on-primary);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover {
  color: var(--primary);
  background: var(--primary-subtle);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: hsl(220, 20%, 93%);
  color: var(--text-primary);
}

.btn-success {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  color: var(--text-on-primary);
  box-shadow: 0 4px 14px hsla(165, 80%, 38%, 0.25);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px hsla(165, 80%, 38%, 0.35);
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning), hsl(30, 90%, 45%));
  color: #ffffff;
  box-shadow: 0 4px 14px hsla(38, 92%, 50%, 0.25);
}

.btn-warning:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px hsla(38, 92%, 50%, 0.35);
  color: #ffffff;
}

.btn-danger {
  background: linear-gradient(135deg, var(--error), hsl(356, 75%, 62%));
  color: var(--text-on-primary);
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: var(--fs-xs);
  min-height: 36px;
}

.btn-lg {
  padding: 0.85rem 1.8rem;
  font-size: var(--fs-base);
  min-height: 50px;
  font-weight: 700;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ---------- 3D Icon Utilities & Button Icons ---------- */
.btn-3d-icon,
.btn img {
  width: 20px !important;
  height: 20px !important;
  max-width: 20px !important;
  max-height: 20px !important;
  object-fit: contain !important;
  vertical-align: middle !important;
  display: inline-block !important;
  flex-shrink: 0 !important;
}

.btn-lg .btn-3d-icon,
.btn-lg > img {
  width: 22px !important;
  height: 22px !important;
  max-width: 22px !important;
  max-height: 22px !important;
}

.btn-sm .btn-3d-icon,
.btn-sm > img {
  width: 16px !important;
  height: 16px !important;
  max-width: 16px !important;
  max-height: 16px !important;
}

.badge-3d-icon,
.badge img {
  width: 16px !important;
  height: 16px !important;
  max-width: 16px !important;
  max-height: 16px !important;
  object-fit: contain !important;
  vertical-align: middle !important;
  display: inline-block !important;
  flex-shrink: 0 !important;
}

/* ---------- Cards (Clean Borderless with Soft Shadows) ---------- */
.card {
  background: var(--bg-card);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: 0 4px 24px -2px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: 0 8px 30px -4px rgba(0, 0, 0, 0.08);
}

/* ---------- Badges (Clean Borderless) ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: var(--fs-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
  line-height: 1.2;
  border: none;
}

.badge-primary {
  background: var(--primary-subtle);
  color: var(--primary);
}

.badge-success {
  background: var(--success-subtle);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-subtle);
  color: hsl(35, 90%, 38%);
}

.badge-info {
  background: var(--info-subtle);
  color: var(--info);
}

.badge-neutral {
  background: hsl(220, 20%, 93%);
  color: var(--text-secondary);
}

/* ---------- Form Inputs ---------- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 46px;
}

.form-input:focus {
  outline: none;
  background: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-input::placeholder {
  color: var(--text-muted);
}

/* ---------- Note Boxes & Callouts (Clean Borderless) ---------- */
.note-box {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
  border: none;
  background: var(--primary-subtle);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.note-box p {
  margin: 0;
}

.note-box.alert-info {
  background: var(--info-subtle);
  color: hsl(205, 85%, 30%);
}

.note-box.alert-warning {
  background: var(--warning-subtle);
  color: hsl(35, 90%, 30%);
}

.note-box.alert-danger {
  background: var(--error-subtle);
  color: hsl(356, 75%, 40%);
}

.note-box.alert-success {
  background: var(--success-subtle);
  color: hsl(152, 65%, 28%);
}

/* ---------- Code Blocks ---------- */
.code-block {
  background: #1e2433;
  color: #f1f5f9;
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-md) 0;
  overflow-x: auto;
  font-family: var(--font-code);
  font-size: 0.9rem;
  line-height: 1.6;
  border: none;
  position: relative;
}

code {
  font-family: var(--font-code);
  font-size: 0.88em;
  background: hsl(220, 20%, 92%);
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-weight: 500;
}

.code-block code {
  background: transparent;
  color: inherit;
  padding: 0;
  border-radius: 0;
}

/* ---------- Toast / Notification ---------- */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 1000;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-on-primary);
  background: hsl(222, 47%, 14%);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-base);
  pointer-events: none;
  max-width: 380px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast-success { background: var(--success); }
.toast-error   { background: var(--error);   }
.toast-warning { background: var(--warning); color: #000; }
.toast-info    { background: var(--primary); }

/* ---------- Utilities ---------- */
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-left    { text-align: left; }
.text-muted   { color: var(--text-muted); }
.text-primary { color: var(--text-primary); }
.text-success { color: var(--success); }
.text-error   { color: var(--error); }
.text-warning { color: var(--warning); }

.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-sm       { gap: var(--space-sm); }
.gap-md       { gap: var(--space-md); }
.gap-lg       { gap: var(--space-lg); }

.hidden       { display: none !important; }
.w-full       { width: 100%; }

/* Responsive Grid Helper */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* ---------- Institutional Branding & Dual Logos ---------- */
.inst-logo-group {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.95);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border-light);
}

.inst-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.08));
}

.inst-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
}

/* ---------- Locked / Gating System Styles ---------- */
.roadmap-card.is-locked {
  background: hsl(220, 20%, 97%);
  border-color: hsl(220, 16%, 88%);
  opacity: 0.85;
  cursor: not-allowed;
  position: relative;
}

.roadmap-card.is-locked:hover {
  transform: none;
  border-color: hsl(220, 16%, 88%);
  box-shadow: var(--shadow-sm);
}

.roadmap-card.is-locked .roadmap-card-title {
  color: var(--text-secondary);
}

.roadmap-card.is-locked .roadmap-card-action {
  color: var(--text-muted);
}

.lock-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: hsl(220, 15%, 90%);
  color: hsl(220, 20%, 35%);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
}

.kkm-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.3px;
}

.kkm-badge.passed {
  background: var(--success-subtle);
  color: var(--success);
  border: 1px solid hsla(152, 65%, 40%, 0.25);
}

.kkm-badge.failed {
  background: var(--warning-subtle);
  color: hsl(35, 90%, 38%);
  border: 1px solid hsla(38, 92%, 50%, 0.3);
}

.kkm-badge.locked {
  background: hsl(220, 18%, 92%);
  color: var(--text-muted);
}

/* Gated Access Screen */
.gated-screen {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
}

.gated-card {
  max-width: 580px;
  width: 100%;
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 2px solid hsl(38, 92%, 85%);
  animation: fadeInUp 0.4s ease-out;
}

.gated-icon-wrap {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: hsl(38, 92%, 94%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg) auto;
}

.gated-icon-wrap img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}