:root {
  --bg-main: #0f172a;
  --bg-panel: #1e293b;
  --bg-card: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-primary: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-danger: #ef4444;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --border-color: #475569;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
}

/* Header & Nav */
.app-header {
  text-align: center;
  padding: 20px 0 10px;
}

.app-header h1 {
  margin: 0 0 20px 0;
  font-weight: 800;
  background: linear-gradient(to right, #60a5fa, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tab-pages {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tab {
  padding: 8px 16px;
  border-radius: 20px;
  background-color: var(--bg-panel);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--border-color);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.tab:not(.disabled):hover {
  background-color: var(--bg-card);
  color: var(--text-main);
}

.curtab {
  background-color: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}

.tab.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Main Container */
.app-main {
  max-width: 90%;
  margin: 0 auto;
  padding: 0 20px 40px;
}

h2 {
  font-weight: 600;
  text-align: center;
  margin-bottom: 30px;
}

/* Buttons */
button {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease, filter 0.15s ease;
}

button:hover:not(:disabled) {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

button:active:not(:disabled) {
  filter: brightness(0.85);
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary,
.btn-edit {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

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

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

.btn-turn {
  background-color: var(--accent-warning);
  border-color: var(--accent-warning);
  color: white;
}

/* Inputs & Forms */
input,
select {
  background-color: var(--bg-main);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-family: 'Inter', sans-serif;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent-primary);
}

.form-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-bottom: 30px;
}

.form-card,
.roomForms {
  background-color: var(--bg-panel);
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 300px;
}

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

/* Tables */
.tableContent {
  overflow-x: auto;
  background-color: var(--bg-panel);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

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

th,
td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: var(--bg-card);
  font-weight: 600;
  color: var(--text-muted);
}

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

/* Base Layouts */
.bracketListItem {
  display: block;
  width: 100%;
  margin-bottom: 10px;
}

.bracketLayout {
  display: flex;
  gap: 20px;
}

.bracketSidebar {
  flex: 0 0 300px;
}