/* style.css - DUMA Modern System */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --bg-color: #f3f4f6;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  background-color: var(--card-bg);
  box-shadow: 0 1px 3px 0 rgba(0,0,0,0.1);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--primary-color);
  font-weight: 700;
}
header a { text-decoration: none; }

header .user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
  flex: 1;
  width: 100%;
  box-sizing: border-box;
}

.card {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.card-header h2 { margin: 0; font-size: 1.25rem; }

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.375rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  text-align: center;
}
.btn-primary { background-color: var(--primary-color); color: white; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-danger { background-color: var(--danger); color: white; }
.btn-success { background-color: var(--success); color: white; }
.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}
.btn-outline:hover { background-color: var(--bg-color); }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }

.table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.table th, .table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}
.table th {
  background-color: var(--bg-color);
  font-weight: 600;
  color: var(--text-muted);
}
.table tr:hover { background-color: #f9fafb; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
.form-control {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  background-color: #fff;
  box-sizing: border-box;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
textarea.form-control { min-height: 100px; }

.badge {
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}
.badge-available { background-color: #d1fae5; color: #065f46; }
.badge-locked { background-color: #fee2e2; color: #991b1b; }

.login-container {
  max-width: 400px;
  margin: 5rem auto;
  width: 100%;
  padding: 0 1rem;
  box-sizing: border-box;
}
.login-header { text-align: center; margin-bottom: 2rem; }
.login-header h1 { color: var(--primary-color); font-size: 2.5rem; margin-bottom: 0.5rem; }

.error-msg {
  color: var(--danger);
  background: #fee2e2;
  padding: 0.75rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}