:root {
  --bg-main: #0b0f19;
  --bg-card: rgba(23, 31, 51, 0.7);
  --bg-sidebar: #0f172a;
  --border-color: rgba(255, 255, 255, 0.08);
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --accent-wa: #25d366;
  --accent-vikunja: #00d2ff;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(37, 211, 102, 0.08) 0%, transparent 40%);
}

.app-container {
  display: flex;
  min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
  width: 280px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.brand-icon {
  position: relative;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #2563eb, #00d2ff);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.sub-icon {
  position: absolute;
  bottom: -2px;
  right: -2px;
  background: #25d366;
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  padding: 3px;
}

.brand-text h2 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
}

.brand-text h2 span {
  color: var(--accent-wa);
}

.badge-port {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.2);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 24px;
  flex-grow: 1;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-btn i {
  font-size: 16px;
  width: 20px;
}

.nav-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.nav-btn.active {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.2), transparent);
  border-left: 3px solid var(--primary);
  color: #fff;
  font-weight: 600;
}

.system-status-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 14px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-indicator.online {
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
}

.status-info {
  display: flex;
  flex-direction: column;
}

.status-label {
  font-size: 11px;
  color: var(--text-dim);
}

.status-val {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}

/* MAIN CONTENT */
.main-content {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
}

.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.header-title h1 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 4px;
}

.header-title p {
  color: var(--text-muted);
  font-size: 14px;
}

/* STATS GRID */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-main);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
}

.vikunja-bg { background: linear-gradient(135deg, #0284c7, #00d2ff); }
.meta-bg { background: linear-gradient(135deg, #059669, #25d366); }
.emp-bg { background: linear-gradient(135deg, #7c3aed, #a855f7); }
.log-bg { background: linear-gradient(135deg, #ea580c, #f97316); }

.stat-title {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
  margin-top: 2px;
}

/* CARDS & LAYOUT */
.card-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-main);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

.card-header.space-between {
  justify-content: space-between;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
}

.card-header h3 i {
  color: var(--primary);
}

.card-body {
  padding: 24px;
}

/* TAB CONTENTS */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* BUTTONS */
.btn {
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.4);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* FORMS */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-section-title {
  font-size: 15px;
  font-weight: 700;
  margin: 16px 0 12px 0;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.divider {
  border: none;
  height: 1px;
  background: var(--border-color);
  margin: 24px 0;
}

.form-actions {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* TABLES */
.table-responsive {
  overflow-x: auto;
}

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

.data-table th {
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 14px 16px;
  font-size: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* SWITCHES */
.switch-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.switch-container {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.switch-container input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 34px;
  transition: .3s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: .3s;
}

input:checked + .slider {
  background-color: var(--primary);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

.switch-label strong {
  display: block;
  font-size: 14px;
}

.switch-label p {
  font-size: 12px;
  color: var(--text-muted);
}

/* WEBHOOK COPIER */
.webhook-item {
  margin-bottom: 16px;
}

.wh-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: block;
}

.copy-box {
  display: flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  justify-content: space-between;
}

.copy-box code {
  font-family: monospace;
  font-size: 13px;
  color: var(--accent-vikunja);
}

.btn-copy {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}

.btn-copy:hover { color: var(--text-main); }

/* MODAL */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-card {
  background: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  padding: 24px;
  box-shadow: var(--shadow-main);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
}

/* CODE BLOCK & GUIDE */
.guide-box h4 {
  margin: 16px 0 8px 0;
  color: var(--primary);
}

.guide-box p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 8px;
}

.code-block {
  position: relative;
  background: #020617;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.code-block pre {
  font-family: monospace;
  font-size: 13px;
  color: #38bdf8;
  white-space: pre-wrap;
}

.btn-copy-code {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
}

/* TOAST NOTIFICATION */
#toastContainer {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-main);
  animation: slideIn 0.3s ease;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}