/* assets/css/style.css */
:root {
  --surface: #020617;
  --surface-container: #0b1329;
  --surface-dim: #070d1e;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --on-primary: #ffffff;
  --primary-container: #1e40af;
  --on-primary-container: #dbeafe;
  --secondary: #9333ea;
  --secondary-hover: #7e22ce;
  --on-secondary: #ffffff;
  --dark-surface: #0f172a;
  --accent-border: #1e293b;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --error: #ef4444;
  --error-bg: #450a0a;
  --font-display: 'Plus Jakarta Sans', 'Hanken Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

body {
  background-color: var(--surface);
  color: var(--text);
  font-family: var(--font-body);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  width: 100%;
}

/* Card Premium (Glassmorphism & Tonal Depth) */
.card {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px -5px rgba(2, 6, 23, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  background-color: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--accent-border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-body);
  transition: all 0.25s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
  background-color: #0f172a;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  font-family: var(--font-body);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--accent-border);
}

.btn-secondary:hover {
  background-color: rgba(37, 99, 235, 0.12);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-block {
  display: block;
  width: 100%;
}

/* Navigation */
.navbar {
  background-color: var(--surface-container);
  border-bottom: 1px solid var(--accent-border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  color: var(--primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  gap: 16px;
  align-items: center;
}

.navbar-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

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

/* Layout */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: 24px;
}

.login-box {
  width: 100%;
  max-width: 400px;
}

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

.mb-4 {
  margin-bottom: 24px;
}

.alert {
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  background-color: #93000a;
  color: #ffdad6;
  border: 1px solid #ffb4ab;
}

/* Grids */
.grid-2-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.grid-3-cols {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 16px;
  }
  .navbar-brand {
    font-size: 18px;
    text-align: center;
    flex-direction: column;
  }
  .navbar-nav {
    flex-wrap: wrap;
    justify-content: center;
  }
  .grid-2-cols, .grid-3-cols {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .container {
    padding: 16px;
  }
  .card {
    padding: 16px;
  }
  .kanban-board {
    padding-bottom: 12px;
  }
}