/* HIDU Server Manager - Design System */
:root {
  --bg-main: #0e0e11;
  --bg-surface: #17171c;
  --bg-elevated: #212128;
  --bg-card: #1c1c22;
  --border: #2c2c36;
  --border-focus: #7f1d1d;
  
  --primary: #5c1212;
  --primary-hover: #731717;
  --primary-active: #450c0c;
  --primary-light: #991b1b;
  --primary-oxblood: #4B0D0D;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.12);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--text-main);
  text-decoration: none;
}

/* Layout */
.navbar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
}

.brand-badge {
  background-color: var(--primary-oxblood);
  color: #fff;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--primary-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-item {
  color: var(--text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.nav-item:hover, .nav-item.active {
  color: var(--text-main);
  background-color: var(--bg-elevated);
}

.nav-item.active {
  color: #fff;
  background-color: var(--primary);
}

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

.main-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem;
  flex: 1;
}

/* Cards & Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Progress bar */
.progress-bar {
  background-color: var(--bg-elevated);
  border-radius: 9999px;
  height: 8px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-fill {
  height: 100%;
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.progress-fill.green { background-color: var(--success); }
.progress-fill.yellow { background-color: var(--warning); }
.progress-fill.red { background-color: var(--danger); }

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.active, .badge.green, .badge.success {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge.warning, .badge.yellow {
  background-color: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge.danger, .badge.red, .badge.inactive {
  background-color: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge.info, .badge.blue {
  background-color: var(--info-bg);
  color: var(--info);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  background-color: var(--bg-elevated);
  color: var(--text-main);
}

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

.btn-primary {
  background-color: var(--primary);
  color: #fff;
  border-color: var(--primary-light);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
  background-color: var(--danger);
  color: #fff;
}

.btn-sm {
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
}

/* Tables */
.table-container {
  width: 100%;
  overflow-x: auto;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

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

td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  font-size: 0.875rem;
}

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

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Terminal / Log Viewer */
.terminal {
  background-color: #08080a;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.4;
  color: #d1d5db;
  height: 500px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-input, .form-select {
  width: 100%;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.75rem;
  color: var(--text-main);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
}

.form-input:focus, .form-select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 2px rgba(127, 29, 29, 0.4);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.75);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  padding: 1.5rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.8);
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.modal-body {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Toast alert */
#toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  display: none;
  z-index: 300;
  box-shadow: var(--shadow);
}

#toast.success { background-color: var(--success); color: #fff; }
#toast.error { background-color: var(--danger); color: #fff; }

@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
    height: auto;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  .main-container {
    padding: 1rem;
  }
}