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

:root {
  /* Default Dark Mode (Premium Indigo & Sky) */
  --bg-primary: #030712;
  --bg-gradient: radial-gradient(circle at top, #0c152a 0%, #030712 100%);
  --bg-card: rgba(17, 24, 39, 0.45);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-primary: #38bdf8;
  --accent-secondary: #6366f1;
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #6366f1 100%);
  --accent-glow: rgba(56, 189, 248, 0.15);
  
  --shadow-card: 0 10px 40px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --input-bg: rgba(3, 7, 18, 0.6);
  --input-border: rgba(255, 255, 255, 0.12);
  --input-focus-ring: rgba(56, 189, 248, 0.35);
  
  --preview-bg: rgba(15, 23, 42, 0.4);
  --preview-text: #e2e8f0;
  --preview-code-bg: rgba(30, 41, 59, 0.5);
  --preview-border: rgba(255, 255, 255, 0.06);
}

:root.light {
  /* Premium Soft Cream / Light Blue Mode */
  --bg-primary: #f8fafc;
  --bg-gradient: radial-gradient(circle at top, #e0e7ff 0%, #f8fafc 100%);
  --bg-card: rgba(255, 255, 255, 0.65);
  --border-color: rgba(0, 0, 0, 0.06);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent-primary: #0284c7;
  --accent-secondary: #4f46e5;
  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
  --accent-glow: rgba(2, 132, 199, 0.1);
  
  --shadow-card: 0 10px 40px -10px rgba(148, 163, 184, 0.15), 0 0 1px 1px rgba(0, 0, 0, 0.03);
  --input-bg: rgba(255, 255, 255, 0.85);
  --input-border: rgba(0, 0, 0, 0.08);
  --input-focus-ring: rgba(2, 132, 199, 0.15);
  
  --preview-bg: rgba(255, 255, 255, 0.8);
  --preview-text: #334155;
  --preview-code-bg: #e2e8f0;
  --preview-border: rgba(0, 0, 0, 0.05);
}

/* Global Custom Styles */
body {
  font-family: 'Plus Jakarta Sans', ui-sans-serif, system-ui, sans-serif;
  background: var(--bg-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  position: relative;
}

*, *::before, *::after {
  box-sizing: inherit;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Background Glow Effect */
.bg-glow-effect {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 450px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(100px);
  pointer-events: none;
  z-index: -1;
  transition: all 0.4s ease;
}

/* Premium Card (Glassmorphism) */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  border-radius: 1.25rem;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

/* Custom layout layout containers */
.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1rem;
}

/* Interactive Tabs with Slide Effect */
.tab-slider-frame {
  overflow: hidden;
  width: 100%;
  border-radius: 1.25rem;
  max-width: 48rem;
  margin: 0 auto 2rem;
}

.tab-slider-track {
  display: flex;
  width: 200%;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-panel {
  width: 50%;
  flex-shrink: 0;
  box-sizing: border-box;
}

/* Layout Utilities (No-Tailwind Safe) */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.w-full {
  width: 100% !important;
}

.max-w-3xl {
  max-width: 48rem;
  width: 100%;
}

.max-w-md {
  max-width: 28rem;
  width: 100%;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* Margin and Spacing Utilities */
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }

/* Flexbox and Grids */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.gap-3 { gap: 0.75rem; }

@media (min-width: 768px) {
  .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .md\:p-8 { padding: 2rem; }
  .md\:p-10 { padding: 2.5rem; }
}

/* Typography styles */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }

@media (min-width: 768px) {
  .md\:text-5xl { font-size: 3rem; }
  .md\:text-base { font-size: 1rem; }
}

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-extrabold { font-weight: 800; }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-widest { letter-spacing: 0.1em; }
.uppercase { text-transform: uppercase; }

/* Custom Component Layouts */
.header-tagline {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-primary);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.gradient-title {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.header-desc {
  color: var(--text-secondary);
  margin-top: 0.75rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.95rem;
  line-height: 1.6;
}

#greeting {
  margin-top: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.25rem 1rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: #10b981;
  display: inline-block;
}

.tabs-container {
  max-width: 48rem;
  margin: 0 auto 2rem;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

.progress-container {
  max-width: 48rem;
  margin: 2rem auto 0;
}

.progress-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

@media (min-width: 768px) {
  .progress-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

.summary-container {
  max-width: 48rem;
  margin: 2rem auto 0;
}

.results-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

/* Modal Overlay & Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 1rem;
}

/* Form Styles */
form > div {
  margin-bottom: 1.25rem;
}
form > div:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  opacity: 0.9;
}

.help-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  line-height: 1.4;
}

/* Live Dev.to Banner */
.live-banner {
  margin-bottom: 1.5rem;
  border-radius: 1rem;
  border: 1px solid rgba(16, 185, 129, 0.25);
  background: rgba(16, 185, 129, 0.08);
  padding: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

@media (max-width: 640px) {
  .live-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}

.btn-success {
  background: #10b981;
  color: white !important;
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}

.notes-box {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: rgba(15, 23, 42, 0.25);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1rem;
  font-style: italic;
}

/* Input Fields styling */
input[type="url"],
input[type="text"],
input[type="email"],
textarea {
  background-color: var(--input-bg) !important;
  border: 1px solid var(--input-border) !important;
  color: var(--text-primary) !important;
  border-radius: 0.875rem !important;
  padding: 0.75rem 1rem !important;
  outline: none !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
  display: block !important;
  font-family: inherit !important;
  box-sizing: border-box !important;
}

input[type="url"]::placeholder,
input[type="text"]::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
  color: var(--text-muted) !important;
  opacity: 0.8;
}

input[type="url"]:focus,
input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-color: var(--accent-primary) !important;
  box-shadow: 0 0 0 3px var(--input-focus-ring) !important;
}

/* Custom buttons */
.btn-primary-glowing {
  background: var(--accent-gradient);
  color: #ffffff !important;
  font-weight: 600;
  border-radius: 0.875rem;
  box-shadow: 0 4px 15px var(--accent-glow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  width: 100%;
  padding: 0.875rem 1rem;
  display: block;
}

.btn-primary-glowing:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
  filter: brightness(1.1);
}

.btn-primary-glowing:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary-glowing:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-secondary {
  border-radius: 0.875rem;
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--bg-card);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border-color);
  border-color: var(--text-secondary);
}

.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-disabled {
  border-radius: 0.875rem;
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.1);
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.5;
}

/* Tabs */
.tab-btn {
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  padding: 0.6rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

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

.tab-btn.active {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 4px 15px var(--accent-glow);
}

/* Steps Progress Indicator */
.step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 0.875rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.step.active {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 0 10px var(--accent-glow);
}

.step.done {
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.05);
}

.step-dot {
  width: 8px;
  height: 8px;
  border-radius: 9999px;
  background: currentColor;
}

/* Badge styling */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 9999px;
  border: 1px solid var(--accent-primary);
  padding: 0.25rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: var(--accent-glow);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
}

.theme-toggle-btn:hover {
  transform: scale(1.05);
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Fixed positioning for floaters */
.fixed {
  position: fixed;
}
.top-6 {
  top: 1.5rem;
}
.right-6 {
  right: 1.5rem;
}
.z-50 {
  z-index: 50;
}

/* Markdown Preview Custom Style */
.markdown-preview-container {
  background: var(--preview-bg);
  color: var(--preview-text);
  border: 1px solid var(--preview-border);
  border-radius: 1.25rem;
  box-shadow: var(--shadow-card);
  transition: all 0.4s ease;
}

.markdown-preview {
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.6;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
  font-weight: 700;
  margin: 1.5em 0 0.5em;
  line-height: 1.25;
  color: var(--text-primary);
}

.markdown-preview h1 {
  font-size: 2.25rem;
  margin-top: 0;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.markdown-preview h2 {
  font-size: 1.65rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.4rem;
}

.markdown-preview h3 {
  font-size: 1.35rem;
}

.markdown-preview p {
  margin: 0.85em 0;
}

.markdown-preview ul,
.markdown-preview ol {
  margin: 0.85em 0;
  padding-left: 1.75em;
}

.markdown-preview ul {
  list-style: disc;
}

.markdown-preview ol {
  list-style: decimal;
}

.markdown-preview code {
  background: var(--preview-code-bg);
  color: var(--text-primary);
  padding: 0.2rem 0.4rem;
  border-radius: 0.35rem;
  font-size: 0.9em;
  font-family: monospace;
}

.markdown-preview pre {
  background: rgba(10, 15, 30, 0.6);
  color: #e2e8f0;
  padding: 1.25rem;
  border-radius: 0.75rem;
  overflow-x: auto;
  margin: 1.25rem 0;
  border: 1px solid var(--border-color);
}

.markdown-preview pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: 0.875rem;
}

.markdown-preview blockquote {
  border-left: 4px solid var(--accent-primary);
  background: var(--accent-glow);
  padding: 0.75rem 1.25rem;
  color: var(--text-secondary);
  margin: 1.25rem 0;
  border-radius: 0 0.5rem 0.5rem 0;
}

.markdown-preview table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.25rem 0;
}

.markdown-preview th,
.markdown-preview td {
  border: 1px solid var(--border-color);
  padding: 0.65rem;
  text-align: left;
}

.markdown-preview th {
  background: var(--bg-card);
  font-weight: 600;
}

.markdown-preview a {
  color: var(--accent-primary);
  text-decoration: underline;
  transition: opacity 0.2s ease;
}
.markdown-preview a:hover {
  opacity: 0.85;
}

.error-box {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: #f87171;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 0.75rem;
  padding: 0.875rem;
  box-sizing: border-box;
}

.status-box {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--accent-primary);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 0.75rem;
  padding: 0.875rem;
  text-align: center;
  font-weight: 500;
  animation: pulse-glow 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  box-sizing: border-box;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: .6; }
}