/* ========================================
   Design System - Web3 Career Build Style
   ======================================== */

:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-light: #3b82f6;
  --color-primary-lighter: #60a5fa;
  --color-primary-bg: rgba(37, 99, 235, 0.1);
  --color-primary-bg-hover: rgba(37, 99, 235, 0.12);
  
  --color-background: #f8fafc;
  --color-surface: rgba(255, 255, 255, 0.8);
  --color-border: rgba(229, 231, 235, 0.8);
  --color-border-light: #f3f4f6;
  
  --color-text-primary: #000000;
  --color-text-secondary: #868e96;
  --color-text-muted: #adb5bd;
  
  --color-success: #40c057;
  --color-success-bg: rgba(64, 192, 87, 0.1);
  --color-warning: #fab005;
  --color-error: #fa5252;
  
  /* Typography - Mantine defaults */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-md: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  
  /* Heading sizes - Mantine defaults */
  --font-size-h1: 2.125rem;   /* 34px */
  --font-size-h2: 1.625rem;   /* 26px */
  --font-size-h3: 1.375rem;   /* 22px */
  --font-size-h4: 1.125rem;   /* 18px */
  --font-size-h5: 1rem;       /* 16px */
  
  /* Line heights - Mantine defaults */
  --line-height: 1.55;
  --line-height-xs: 1.4;
  --line-height-sm: 1.45;
  --line-height-md: 1.55;
  --line-height-lg: 1.6;
  
  /* Spacing */
  --spacing-xs: 0.625rem;     /* 10px */
  --spacing-sm: 0.75rem;      /* 12px */
  --spacing-md: 1rem;         /* 16px */
  --spacing-lg: 1.25rem;      /* 20px */
  --spacing-xl: 2rem;         /* 32px */
  --spacing-2xl: 3rem;
  
  /* Border Radius - Mantine defaults */
  --radius-xs: 0.125rem;      /* 2px */
  --radius-sm: 0.25rem;       /* 4px */
  --radius-md: 0.5rem;        /* 8px */
  --radius-lg: 1rem;          /* 16px */
  --radius-xl: 2rem;          /* 32px */
  --radius-full: 9999px;
  --radius-default: 18px;
  
  /* Shadows - Mantine style */
  --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05) 0 10px 15px -5px, rgba(0, 0, 0, 0.04) 0 7px 7px -5px;
  --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05) 0 20px 25px -5px, rgba(0, 0, 0, 0.04) 0 10px 10px -5px;
  
  /* Container */
  --container-max-width: 1200px; /* Mantine default lg size */
}

/* ========================================
   Reset & Base Styles
   ======================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  background-color: #f8fafc;
  background: radial-gradient(circle at 0% 0%, rgba(37, 99, 235, 0.05), transparent 45%),
              radial-gradient(circle at 100% 100%, rgba(99, 102, 241, 0.05), transparent 45%),
              #f8fafc;
  color: var(--color-text-primary);
  line-height: var(--line-height);
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ========================================
   Layout Components
   ======================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.stack {
  display: flex;
  flex-direction: column;
}

.stack-xs { gap: 0.25rem; } /* 4px - exact match from template */
.stack-sm { gap: var(--spacing-sm); }
.stack-md { gap: var(--spacing-md); }
.stack-lg { gap: var(--spacing-lg); }
.stack-xl { gap: var(--spacing-xl); }

.group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.group-xs { gap: var(--spacing-xs); }
.group-sm { gap: var(--spacing-sm); }
.group-md { gap: var(--spacing-md); }
.group-lg { gap: var(--spacing-lg); }

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

/* ========================================
   Header
   ======================================== */

/* ========================================
   Header
   ======================================== */

.header {
  background: transparent; /* Transparent to show body gradient */
  border-bottom: none; /* No border */
  padding: 2rem 0 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.brand-link:hover {
  color: inherit;
}

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

.brand-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  line-height: var(--line-height-sm);
  /* Prismatic gradient from template */
  background: linear-gradient(135deg, #6366f1 0%, #3b82f6 55%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-status-wrapper {
  display: flex;
  align-items: center;
  gap: 0.375rem; /* Exact gap from template */
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
  /* Pulse animation maintained */
}

.status-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 400;
  line-height: 1;
}

.brand-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-sm);
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-item {
  color: #64748b; /* --app-text-muted from template */
  font-size: 0.95rem; /* Exact from template */
  padding: 6px 10px; /* Exact from template */
  border-radius: 12px; /* Exact from template */
  font-weight: 500;
  transition: all 0.14s; /* Faster transition */
}

.nav-item:hover {
  color: var(--color-primary); /* --app-accent */
  background-color: rgba(37, 99, 235, 0.08); /* Exact from template */
}

/* ========================================
   Main Content
   ======================================== */

.main {
  padding: 1.5rem 0; /* Reduced from 2rem to be more compact */
}

.page-header {
  margin-bottom: 1.5rem; /* Slightly reduced */
}

.page-title {
  font-size: var(--font-size-h1);
  font-weight: 700;
  line-height: 1.1; /* Tighter line height for large headings */
  color: var(--color-text-primary);
  margin: 0; /* Reset margin, let stack handle gap */
}

.page-title-wrapper {
  align-items: center;
}

.page-subtitle {
  color: var(--color-text-muted); /* Should be Dimmed */
  font-size: var(--font-size-lg);
  line-height: var(--line-height-lg);
}

/* ========================================
   Badge Component
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.625rem; /* Mantine Badge padding */
  height: 1.25rem; /* Default height */
  font-size: 0.75rem; /* xs size */
  font-weight: 700;
  border-radius: var(--radius-xl); /* Full rounded */
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1;
}

.badge-lg {
  height: 1.625rem;
  padding: 0 0.875rem;
  font-size: 0.8125rem; /* 13px */
}

.badge-primary {
  background: var(--color-primary); /* Blue filled */
  color: white;
  border: 1px solid transparent;
}

.badge-week {
  background: var(--color-primary-bg);
  color: var(--color-primary);
  border: 1px solid transparent;
}

/* ========================================
   Tabs Component
   ======================================== */

.tabs {
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.tabs-list {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
  margin-bottom: -1px; /* Overlap the border */
}

.tab-button {
  padding: var(--spacing-xs) 0;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
}

.tab-button:hover {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-border);
}

.tab-button.active {
  color: var(--color-text-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

.tab-button.active::after {
  display: none;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ========================================
   Card Component
   ======================================== */

.card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(229, 231, 235, 0.8);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 10px 40px -10px rgba(15, 23, 42, 0.06);
}

.card-title {
  font-size: var(--font-size-h3);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--spacing-md);
}

/* ========================================
   Search Component
   ======================================== */

.search-wrapper {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.search-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-sm) var(--spacing-md);
  padding-left: 2.5rem;
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

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

/* ========================================
   Table Component
   ======================================== */

.table-wrapper {
  overflow-x: auto;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(229, 231, 235, 0.8);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 10px 40px -10px rgba(15, 23, 42, 0.06);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th,
.table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-border-light);
  white-space: nowrap;
}

.table tbody tr {
  transition: background-color 0.15s ease;
}

.table tbody tr:hover {
  background: var(--color-border-light);
}

.table tbody tr:nth-child(even) {
  background: rgba(249, 250, 251, 0.5);
}

.table tbody tr:nth-child(even):hover {
  background: var(--color-border-light);
}

.table td:last-child {
  border-bottom: none;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* Table Link Styles */
.table-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.table-link:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

.table-link svg {
  flex-shrink: 0;
}

.table-link-disabled {
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.table-link-disabled:hover {
  background: transparent;
}

/* Group for multiple links (YouTube + Bilibili) */
.table-links-group {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

/* ========================================
   Empty State
   ======================================== */

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

/* ========================================
   Footer
   ======================================== */

/* ========================================
   Footer
   ======================================== */

.footer {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(229, 231, 235, 0.8);
  border-radius: var(--radius-lg); /* lg not md */
  backdrop-filter: blur(12px) saturate(180%);
  box-shadow: 0 10px 40px -10px rgba(15, 23, 42, 0.06);
  padding: var(--spacing-lg);
  margin-top: auto;
  margin-bottom: var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: 0; /* No margin, divider handles spacing */
}

.footer-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-title {
  font-size: var(--font-size-h4); /* h4 size from template */
  font-weight: var(--mantine-h4-font-weight, 700);
  line-height: var(--line-height-sm);
  color: var(--color-text-primary);
  margin: 0;
}

.footer-section-title {
  font-size: var(--font-size-md); /* Regular text size */
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.footer-description {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm); /* sm from template */
  line-height: 1.55;
  margin: 0;
}

.footer-links-column {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-link {
  color: var(--color-primary);
  font-size: var(--font-size-sm); /* sm from template */
  text-decoration: none;
  transition: color 0.2s ease;
  line-height: 1.55;
}

.footer-link:hover {
  text-decoration: underline;
}

/* Social links grid - 2 columns */
.footer-social-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  row-gap: var(--spacing-sm);
}

.footer-social-link {
  display: flex;
  align-items: center;
  gap: 0.375rem; /* calc(0.375rem * var(--mantine-scale)) */
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: color 0.2s ease;
  line-height: 1.55;
}

.footer-social-link:hover {
  text-decoration: underline;
}

.footer-social-link svg {
  flex-shrink: 0;
}

/* Divider */
.footer-divider {
  height: 1px;
  background-color: rgba(229, 231, 235, 0.8);
  margin: var(--spacing-md) 0; /* margin-block */
}

.footer-copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs); /* xs from template */
  text-align: left; /* Left aligned, not center */
  margin: 0;
}

/* ========================================
   Responsive Styles
   ======================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .page-title {
    font-size: var(--font-size-h2);
  }
  
  .tabs-list {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--spacing-xs);
  }
  
  .tab-button {
    padding: var(--spacing-sm) var(--spacing-md);
    white-space: nowrap;
  }
  
  .table th,
  .table td {
    padding: var(--spacing-sm);
  }
  
  .search-input {
    max-width: 100%;
  }

  /* Footer responsive */
  .footer-grid {
    grid-template-columns: 1fr; /* Stack vertically on mobile */
    gap: var(--spacing-lg);
  }
}

/* ========================================
   Utilities
   ======================================== */

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }