/**
 * Author AI - Base Styles
 * Foundation styles and design system following Trend-AI patterns
 */

/* CSS Variables - Design System */
:root {
  /* Colors - Author AI Brand */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #a5b4fc;
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

  /* Secondary Colors */
  --secondary-color: #10b981;
  --secondary-dark: #059669;
  --secondary-light: #6ee7b7;

  /* Accent Colors */
  --accent-purple: #8b5cf6;
  --accent-indigo: #6366f1;
  --accent-blue: #3b82f6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  /* Status Colors */
  --success-color: #10b981;
  --success-bg: #ecfdf5;
  --danger-color: #ef4444;
  --danger-bg: #fef2f2;

  /* Grayscale */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-dark: #1f2937;
  --bg-darker: #111827;

  /* Text Colors */
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;
  --text-muted: #6b7280;

  /* Border Colors */
  --border-light: #f3f4f6;
  --border-medium: #e5e7eb;
  --border-dark: #d1d5db;
  --border-focus: #6366f1;

  /* Shadow Values */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Merriweather', Georgia, serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
  --font-display: 'Lexend', 'Inter', sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  /* 12px */
  --text-sm: 0.875rem;
  /* 14px */
  --text-base: 1rem;
  /* 16px */
  --text-lg: 1.125rem;
  /* 18px */
  --text-xl: 1.25rem;
  /* 20px */
  --text-2xl: 1.5rem;
  /* 24px */
  --text-3xl: 1.875rem;
  /* 30px */
  --text-4xl: 2.25rem;
  /* 36px */
  --text-5xl: 3rem;
  /* 48px */
  --text-6xl: 3.75rem;
  /* 60px */

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Spacing Scale */
  --space-1: 0.25rem;
  /* 4px */
  --space-2: 0.5rem;
  /* 8px */
  --space-3: 0.75rem;
  /* 12px */
  --space-4: 1rem;
  /* 16px */
  --space-5: 1.25rem;
  /* 20px */
  --space-6: 1.5rem;
  /* 24px */
  --space-8: 2rem;
  /* 32px */
  --space-10: 2.5rem;
  /* 40px */
  --space-12: 3rem;
  /* 48px */
  --space-16: 4rem;
  /* 64px */
  --space-20: 5rem;
  /* 80px */
  --space-24: 6rem;
  /* 96px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  /* 4px */
  --radius-md: 0.375rem;
  /* 6px */
  --radius-lg: 0.5rem;
  /* 8px */
  --radius-xl: 0.75rem;
  /* 12px */
  --radius-2xl: 1rem;
  /* 16px */
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-base: 300ms ease-out;
  --transition-slow: 500ms ease-out;

  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

html {
  font-family: var(--font-sans);
  line-height: var(--leading-normal);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* Headings */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin: 0;
}

h1 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
}

h2 {
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
}

h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
}

h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
}

h5 {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
}

h6 {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
}

/* Paragraphs and Text */
p {
  margin: 0;
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

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

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

a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Lists */
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Buttons - Base Styles */
button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
  transition: all var(--transition-fast);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Button Variants */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Primary Button */
.btn.primary {
  background: var(--primary-gradient);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

/* Secondary Button */
.btn.secondary {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn.secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--border-dark);
}

/* Input Fields */
input,
textarea,
select {
  font-family: inherit;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-tertiary);
}

/* Form Groups */
.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

/* Container Layouts */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (min-width: 640px) {
  .sm\:grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .sm\:grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .md\:grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Text Utilities */
.text-center {
  text-align: center;
}

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

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

.text-xs {
  font-size: var(--text-xs);
}

.text-sm {
  font-size: var(--text-sm);
}

.text-base {
  font-size: var(--text-base);
}

.text-lg {
  font-size: var(--text-lg);
}

.text-xl {
  font-size: var(--text-xl);
}

.text-2xl {
  font-size: var(--text-2xl);
}

.text-3xl {
  font-size: var(--text-3xl);
}

.font-light {
  font-weight: var(--font-light);
}

.font-normal {
  font-weight: var(--font-normal);
}

.font-medium {
  font-weight: var(--font-medium);
}

.font-semibold {
  font-weight: var(--font-semibold);
}

.font-bold {
  font-weight: var(--font-bold);
}

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

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

.text-tertiary {
  color: var(--text-tertiary);
}

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

/* Margin and Padding Utilities */
.m-0 {
  margin: 0;
}

.m-1 {
  margin: var(--space-1);
}

.m-2 {
  margin: var(--space-2);
}

.m-3 {
  margin: var(--space-3);
}

.m-4 {
  margin: var(--space-4);
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

.p-2 {
  padding: var(--space-2);
}

.p-3 {
  padding: var(--space-3);
}

.p-4 {
  padding: var(--space-4);
}

.p-6 {
  padding: var(--space-6);
}

/* Display Utilities */
.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

.inline {
  display: inline;
}

.hidden {
  display: none;
}

/* Position Utilities */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
}

/* Border Radius Utilities */
.rounded-sm {
  border-radius: var(--radius-sm);
}

.rounded {
  border-radius: var(--radius-md);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.rounded-xl {
  border-radius: var(--radius-xl);
}

.rounded-full {
  border-radius: var(--radius-full);
}

/* Shadow Utilities */
.shadow-sm {
  box-shadow: var(--shadow-sm);
}

.shadow {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

.shadow-xl {
  box-shadow: var(--shadow-xl);
}

/* Animation Utilities */
.transition {
  transition: all var(--transition-fast);
}

.transition-slow {
  transition: all var(--transition-slow);
}

/* Gradient Text */
.gradient-text {
  background: var(--primary-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

/* Loading States */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 767px) {
  :root {
    --text-4xl: 2rem;
    /* 32px on mobile */
    --text-3xl: 1.75rem;
    /* 28px on mobile */
    --text-2xl: 1.5rem;
    /* 24px on mobile */
  }

  .container {
    padding: 0 var(--space-4);
  }

  h1 {
    font-size: var(--text-3xl);
  }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --border-light: #374151;
    --border-medium: #4b5563;
    --border-dark: #6b7280;
  }
}

/* Print Styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }

  .no-print {
    display: none !important;
  }
}

/* ========================================
   Maven & Discord Banner Styles
   ======================================== */

/* Maven Course Announcement Banner */
.announcement-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  background: linear-gradient(135deg, #4338ca 0%, #c084fc 100%);
  color: white;
  box-shadow: var(--shadow-lg);
  transform: translateY(-100%);
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  margin: 0;
  border: none;
}

.announcement-banner.show {
  transform: translateY(0);
}

.announcement-banner.hiding {
  transform: translateY(-100%);
}

.banner-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 100%;
  box-sizing: border-box;
}

.banner-content {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  min-width: 0;
}

.banner-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 200px;
  animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
  }

  50% {
    box-shadow: 0 0 0 8px rgba(255, 255, 255, 0);
  }
}

.banner-badge i {
  font-size: 0.875rem;
}

.banner-text {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  line-height: 1.2;
  flex: 1;
  min-width: 0;
}

.banner-text strong {
  font-weight: 600;
  font-size: 0.95rem;
}

.banner-separator {
  color: rgba(255, 255, 255, 0.4);
  font-weight: 300;
  font-size: 0.85rem;
}

.banner-detail {
  color: rgba(255, 255, 255, 0.95);
  font-weight: 500;
}

.banner-countdown {
  background: rgba(255, 255, 255, 0.15);
  padding: 6px 12px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
  flex-shrink: 0;
  animation: countdown-glow 2s ease-in-out infinite;
}

@keyframes countdown-glow {

  0%,
  100% {
    background: rgba(255, 255, 255, 0.15);
  }

  50% {
    background: rgba(255, 255, 255, 0.25);
  }
}

.banner-students {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.banner-students i {
  font-size: 0.7rem;
}

.banner-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.banner-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: white;
  color: var(--primary-color);
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 180px;
}

.banner-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  color: var(--primary-dark);
}

.banner-cta i {
  font-size: 0.875rem;
  transition: transform 0.3s ease;
}

.banner-cta:hover i {
  transform: translateX(4px);
}

.banner-close {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.banner-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: rotate(90deg);
}

.banner-close i {
  font-size: 0.875rem;
}

/* Discord Community Banner */
.discord-banner {
  background: linear-gradient(135deg, #5865F2 0%, #7289DA 100%);
  /* Top position is set dynamically by JavaScript */
  margin: 0;
  margin-top: -1px;
  /* Slight overlap to ensure no gap */
  padding: 0;
  border: none;
  box-shadow: none;
  /* Remove shadow to eliminate gap appearance */
}

.discord-badge {
  animation: discord-pulse 2s ease-in-out infinite;
}

@keyframes discord-pulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
  }

  50% {
    box-shadow: 0 0 0 8px rgba(255, 255, 255, 0);
  }
}

.banner-members {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.banner-members i {
  font-size: 0.7rem;
}

.discord-cta {
  background: white;
  color: #5865F2;
}

.discord-cta:hover {
  color: #4752C4;
}

/* Adjust body padding based on which banners are visible */
body.maven-visible {
  padding-top: 60px;
}

body.discord-visible {
  padding-top: 60px;
}

body.both-banners-visible {
  padding-top: 120px;
}

/* Adjust navigation based on which banners are visible */
body.maven-visible .landing-nav {
  top: 60px;
}

body.discord-visible .landing-nav {
  top: 60px;
}

body.both-banners-visible .landing-nav {
  top: 120px;
}

/* Legacy support for single banner */
body.banner-visible {
  padding-top: 60px;
}

body.banner-visible .landing-nav {
  top: 60px;
}

/* Mobile Banner Styles */
@media (max-width: 768px) {

  /* Remove fixed height on mobile - let content determine height */
  .announcement-banner {
    min-height: auto;
    max-height: none;
    height: auto;
    overflow: visible;
    margin-bottom: 0;
    padding-bottom: 0;
  }

  .banner-container {
    flex-direction: column;
    padding: 15px 20px 15px 20px;
    gap: 10px;
    height: auto;
    margin-bottom: 0;
  }

  .banner-content {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }

  .banner-text {
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
  }

  .banner-separator {
    display: none;
  }

  .banner-text strong {
    font-size: 0.95rem;
  }

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

  .banner-cta {
    flex: 1;
    justify-content: center;
    padding: 10px 16px;
    font-size: 0.9rem;
  }

  .banner-badge {
    font-size: 0.7rem;
    min-width: auto;
  }

  body.maven-visible,
  body.discord-visible,
  body.banner-visible {
    padding-top: 155px !important;
  }

  body.both-banners-visible {
    padding-top: 310px !important;
  }

  body.maven-visible .landing-nav,
  body.discord-visible .landing-nav,
  body.banner-visible .landing-nav {
    top: 155px !important;
  }

  body.both-banners-visible .landing-nav {
    top: 310px !important;
  }
}