:root {
  /* Neutrals */
  --bg: #fdfdfd;
  --bg-offset: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --ink: #0f172a;
  --ink-soft: #64748b;
  --ink-muted: #94a3b8;

  /* Accents - Fun splashes of color */
  --teal: #14b8a6;
  --coral: #fb7185;
  --electric: #3b82f6;
  --purple: #a855f7;
  
  /* Semantic */
  --primary: var(--teal);
  --primary-hover: #0d9488;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* Layout */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bg);
  background-image: 
    radial-gradient(at 0% 0%, rgba(20, 184, 166, 0.05) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(59, 130, 246, 0.05) 0px, transparent 50%);
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  margin-top: 0;
  letter-spacing: -0.02em;
}

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

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

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--teal), var(--electric));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.05em;
}

nav {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s;
}

nav a:hover, nav a.active {
  color: var(--ink);
}

.user-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-left: 1.5rem;
  border-left: 1px solid var(--border);
}

.avatar, .avatar-fallback {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--ink-soft);
  border: 2px solid var(--surface);
  box-shadow: var(--shadow-sm);
}

/* Hero Section */
.hero {
  margin-bottom: 3rem;
  animation: fadeIn 0.6s ease-out;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.hero p {
  font-size: 1.125rem;
  color: var(--ink-soft);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Cards & Panels */
.grid.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.card {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  opacity: 0.7;
}

.card:nth-child(2n)::before { background: var(--coral); }
.card:nth-child(3n)::before { background: var(--electric); }
.card:nth-child(4n)::before { background: var(--purple); }

.card h2 {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  margin-bottom: 0.5rem;
}

.metric {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}

.panel {
  background: var(--surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.panel h2 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Tables */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

th {
  background: var(--bg-offset);
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--ink-soft);
}

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

tr:hover td {
  background: var(--bg-offset);
  color: var(--ink);
}

/* Buttons */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  font-family: inherit;
  gap: 0.5rem;
}

button {
  background: var(--primary);
  color: white;
}

button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

button.secondary, .btn.secondary {
  background: var(--bg-offset);
  color: var(--ink);
  border: 1px solid var(--border);
}

button.secondary:hover {
  background: var(--border);
}

button.danger {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fee2e2;
}

button.danger:hover {
  background: var(--danger);
  color: white;
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.form-grid .full {
  grid-column: span 2;
}

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

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-offset);
  font-family: inherit;
  font-size: 0.95rem;
  transition: all 0.2s;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.1);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
  cursor: pointer;
}

input[type="checkbox"] {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--primary);
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert.warning {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

.alert.success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

/* Login Page Specific */
.login-container {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-panel {
  max-width: 400px;
  width: 100%;
  text-align: center;
  padding: 3rem 2rem;
}

.google-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: white;
  color: var(--ink);
  border: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all 0.2s;
  width: 100%;
  box-shadow: var(--shadow-sm);
}

.google-login-btn:hover {
  background: var(--bg-offset);
  border-color: var(--ink-muted);
  transform: translateY(-1px);
}

/* Badges / Status */
.badge {
  display: inline-flex;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-applied { background: #e0f2fe; color: #0369a1; }
.badge-interviewing { background: #fef3c7; color: #92400e; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-offer { background: #dcfce7; color: #166534; }

/* Responsive */
@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-grid .full {
    grid-column: span 1;
  }
  .site-header {
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
  }
  nav {
    gap: 0.75rem;
    justify-content: center;
  }
  .user-nav {
    border-left: none;
    border-top: 1px solid var(--border);
    padding-left: 0;
    padding-top: 1rem;
    width: 100%;
    justify-content: center;
  }
  .hero h1 {
    font-size: 2rem;
  }
}