/**
 * Coding Academy - Modern Developer Theme Stylesheet
 * Supports Dark & Light mode, multi-panel interactive IDE layout, and responsive UI
 */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;

  /* Light Theme Variables */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-editor: #1e1e2e;
  --border-color: #e2e8f0;
  --border-focus: #6366f1;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.02);
  --accent-primary: #4f46e5;
  --accent-hover: #4338ca;
  --accent-cyan: #0891b2;
  --accent-emerald: #059669;
}

[data-theme="dark"], .dark {
  /* Dark Theme Variables */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-editor: #0d1117;
  --border-color: #1e293b;
  --border-focus: #818cf8;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --card-shadow: 0 4px 25px -2px rgba(0, 0, 0, 0.4), 0 0 15px 0 rgba(99, 102, 241, 0.05);
  --accent-primary: #6366f1;
  --accent-hover: #818cf8;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Universal Selection Colors */
::selection {
  background-color: #6366f1 !important;
  color: #ffffff !important;
}
::-moz-selection {
  background-color: #6366f1 !important;
  color: #ffffff !important;
}

/* Smooth Navigation Transitions */
.nav-link-transition {
  transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}


.font-mono {
  font-family: var(--font-mono);
}

/* Glassmorphism & Developer Accents */
.glass-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(8px);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.glow-indigo {
  box-shadow: 0 0 25px -3px rgba(99, 102, 241, 0.35);
}

.glow-cyan {
  box-shadow: 0 0 25px -3px rgba(6, 182, 212, 0.35);
}

.gradient-text {
  background: linear-gradient(135deg, #6366f1 0%, #06b6d4 50%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Multi-Panel Interactive IDE */
.ide-wrapper {
  display: grid;
  grid-template-columns: 420px 1fr 1fr;
  grid-template-rows: 100%;
  height: calc(100vh - 56px);
  height: calc(100dvh - 56px);
  max-height: calc(100vh - 56px);
  max-height: calc(100dvh - 56px);
  overflow: hidden;
  background: var(--bg-primary);
  flex: 1;
  min-height: 0;
}

@media (max-width: 1200px) {
  .ide-wrapper {
    grid-template-columns: 360px 1fr 1fr;
  }
}

.ide-instructions {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  height: 100% !important;
  max-height: 100% !important;
  min-height: 0 !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  display: block !important;
  overscroll-behavior-y: contain;
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(99, 102, 241, 0.5) transparent;
}

/* Dedicated styled scrollbar for instructions pane */
.ide-instructions::-webkit-scrollbar {
  width: 8px;
}
.ide-instructions::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
}
.dark .ide-instructions::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
}
.ide-instructions::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.4);
  border-radius: 9999px;
}
.ide-instructions::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.8);
}

.ide-editor-container {
  display: flex;
  flex-direction: column;
  background: #1e1e2e;
  border-right: 1px solid var(--border-color);
  overflow: hidden;
  height: 100% !important;
  max-height: 100% !important;
  min-height: 0 !important;
}

.ide-preview-container {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  overflow: hidden;
  height: 100% !important;
  max-height: 100% !important;
  min-height: 0 !important;
}

/* Responsive: Mobile & Tablet (< 900px) */
@media (max-width: 900px) {
  .ide-wrapper {
    display: flex !important;
    flex-direction: column !important;
    height: calc(100vh - 56px) !important;
    height: calc(100dvh - 56px) !important;
    max-height: calc(100vh - 56px) !important;
    max-height: calc(100dvh - 56px) !important;
    min-height: 0 !important;
    overflow: hidden !important;
  }

  .ide-mobile-tab-content {
    display: none !important;
  }

  .ide-mobile-tab-content.active {
    display: block !important;
    height: 100% !important;
    max-height: 100% !important;
    min-height: 0 !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    flex: 1 !important;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
  }

  .ide-editor-container.ide-mobile-tab-content.active,
  .ide-preview-container.ide-mobile-tab-content.active {
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
  }
}

@media (min-width: 901px) {
  .ide-mobile-tab-content {
    display: block !important;
  }
  .ide-editor-container.ide-mobile-tab-content,
  .ide-preview-container.ide-mobile-tab-content {
    display: flex !important;
  }
}

.editor-tabs {
  display: flex;
  background: #181825;
  border-bottom: 1px solid #313244;
}

.editor-tab-btn {
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: #a6adc8;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.editor-tab-btn:hover {
  color: #cdd6f4;
  background: #1e1e2e;
}

.editor-tab-btn.active {
  color: #cdd6f4;
  background: #1e1e2e;
  border-bottom: 2px solid #89b4fa;
}

.editor-content-area {
  flex: 1;
  position: relative;
}

.ace-editor-instance {
  width: 100%;
  height: 100%;
  font-size: 14px;
  font-family: var(--font-mono) !important;
}

/* Custom scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.4);
}

/* Custom Badge Pill */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
}

/* ========================================================
   CERTIFICATE FIXED A4 SYSTEM & RESPONSIVE PREVIEW
   ======================================================== */

:root {
  --cert-base-width: 1122px;
  --cert-base-height: 794px;
  --cert-scale: 1;
}

/* Certificate Viewport & Scaling Stage (Screen Mode) */
.certificate-viewport {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 8px 0 24px;
  display: flex;
  justify-content: center;
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: rgba(99, 102, 241, 0.4) transparent;
}

.certificate-viewport::-webkit-scrollbar {
  height: 6px;
}
.certificate-viewport::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.4);
  border-radius: 9999px;
}

.certificate-stage {
  position: relative;
  width: calc(var(--cert-base-width) * var(--cert-scale, 1));
  height: calc(var(--cert-base-height) * var(--cert-scale, 1));
  min-width: 0;
  margin: 0 auto;
  transition: width 0.12s ease-out, height 0.12s ease-out;
  transform-origin: top left;
  flex-shrink: 0;
}

#certificate-print-area {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--cert-base-width);
  height: var(--cert-base-height);
  min-width: var(--cert-base-width);
  min-height: var(--cert-base-height);
  max-width: var(--cert-base-width);
  max-height: var(--cert-base-height);
  transform: scale(var(--cert-scale, 1));
  transform-origin: top left;
  box-sizing: border-box;
  background-color: #ffffff;
  color: #0f172a;
  box-shadow: 0 20px 45px -10px rgba(15, 23, 42, 0.22), 0 0 0 1px rgba(15, 23, 42, 0.08);
  border-radius: 4px;
  overflow: hidden;
  user-select: text;
}

/* Fullscreen Mode Styling */
.certificate-viewport:fullscreen,
.certificate-viewport:-webkit-full-screen {
  background: #090d16;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

/* Strict A4 Landscape Print Styles (297mm x 210mm) */
@page {
  size: A4 landscape;
  margin: 0mm;
}

@media print {
  html, html.dark, body, body.dark {
    width: 297mm !important;
    height: 210mm !important;
    margin: 0 !important;
    padding: 0 !important;
    background: #ffffff !important;
    color: #0f172a !important;
    overflow: hidden !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  /* Hide all regular UI */
  body * {
    visibility: hidden;
  }

  header, footer, nav, aside, .no-print, #toast-container, .navbar, .mobile-menu, [role="navigation"] {
    display: none !important;
  }

  /* Make Certificate Printable Target Visible & Fill Page */
  #certificate-print-area,
  #certificate-print-area * {
    visibility: visible !important;
  }

  #certificate-print-area {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    width: 297mm !important;
    height: 210mm !important;
    min-width: 297mm !important;
    min-height: 210mm !important;
    max-width: 297mm !important;
    max-height: 210mm !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    transform: none !important;
    overflow: hidden !important;
    page-break-before: avoid !important;
    page-break-after: avoid !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }
}


/* Dropdown Bridge & Hover Protection (Fixes hover closing issue) */
.dropdown-container {
  position: relative;
}
.dropdown-container:hover > .dropdown-menu,
.dropdown-container.is-active > .dropdown-menu {
  display: block !important;
}
.dropdown-menu {
  pointer-events: auto;
}
.dropdown-menu::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: transparent;
  pointer-events: auto;
}

/* Professional Ace Autocomplete Popup Styling */
.ace_autocomplete {
  width: 320px !important;
  border-radius: 12px !important;
  background: #181825 !important;
  border: 1px solid #313244 !important;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.5), 0 0 15px rgba(99, 102, 241, 0.2) !important;
  font-family: var(--font-mono) !important;
  font-size: 13px !important;
  z-index: 99999 !important;
  overflow: hidden !important;
}
.ace_autocomplete .ace_line {
  padding: 4px 8px !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03) !important;
  color: #cdd6f4 !important;
}
.ace_autocomplete .ace_completion-highlight {
  color: #89b4fa !important;
  font-weight: bold !important;
}
.ace_autocomplete .ace_line-hover,
.ace_autocomplete .ace_selected {
  background: #313244 !important;
  color: #ffffff !important;
  border-radius: 6px !important;
}
.ace_autocomplete .ace_rightAlignedText {
  color: #a6adc8 !important;
  font-size: 11px !important;
  text-transform: uppercase !important;
  font-weight: 600 !important;
  padding: 1px 6px !important;
  background: rgba(99, 102, 241, 0.15) !important;
  border-radius: 4px !important;
}

/* Custom Slim Scrollbar for Admin Sidebar & Navigation */
.custom-scrollbar::-webkit-scrollbar {
  width: 4px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.25);
  border-radius: 9999px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.45);
}