/* ── KRAD Global Design System ────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* ── Colors ── */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-hover: rgba(255, 255, 255, 0.08);
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-input-focus: rgba(255, 255, 255, 0.1);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(99, 102, 241, 0.4);
  --border-input: rgba(255, 255, 255, 0.12);
  --border-input-focus: rgba(99, 102, 241, 0.6);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #a5b4fc;

  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.25);

  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.25);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.25);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.25);
  --info: #3b82f6;

  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-dark: linear-gradient(180deg, #0a0e1a 0%, #111827 100%);
  --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);

  /* ── Typography ── */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;

  /* ── Spacing ── */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* ── Borders ── */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px var(--accent-glow);

  /* ── Transitions ── */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent);
}

/* ── Utilities ── */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
}

.glass-strong {
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid var(--border-subtle);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow {
  box-shadow: var(--shadow-glow);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: none;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  border: none;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-success {
  background: var(--success);
  color: white;
  box-shadow: 0 4px 15px var(--success-glow);
}

.btn-success:hover:not(:disabled) {
  background: #059669;
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--danger);
  color: white;
  box-shadow: 0 4px 15px var(--danger-glow);
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
  border-color: var(--border-accent);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-base);
}

/* ── Inputs ── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.input-group label {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper .input-icon {
  position: absolute;
  left: var(--space-4);
  color: var(--text-muted);
  font-size: var(--font-lg);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.input-wrapper input:focus ~ .input-icon,
.input-wrapper input:focus + .input-icon {
  color: var(--accent-light);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-base);
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-base);
}

select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.2rem;
  padding-right: 2.5rem;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

select option {
  background-color: #111827;
  color: #f1f5f9;
  padding: 10px 14px;
}

select option:checked,
select option:hover {
  background-color: #1f2937;
  color: #818cf8;
}

input:focus,
select:focus,
textarea:focus {
  background: var(--bg-input-focus);
  border-color: var(--border-input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

input::placeholder {
  color: var(--text-muted);
}

.input-with-icon {
  padding-left: 2.75rem;
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-primary);
}

/* ── Status Indicators ── */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  margin-right: var(--space-2);
}

.status-dot.online {
  background: var(--success);
  box-shadow: 0 0 8px var(--success-glow);
  animation: pulse-green 2s infinite;
}

.status-dot.offline {
  background: var(--text-muted);
}

.status-dot.ringing {
  background: var(--warning);
  box-shadow: 0 0 8px var(--warning-glow);
  animation: pulse-yellow 1s infinite;
}

.status-dot.in-call {
  background: var(--info);
  box-shadow: 0 0 8px rgba(59, 130, 246, 0.25);
}

.status-dot.danger {
  background: var(--danger);
  box-shadow: 0 0 8px var(--danger-glow);
}

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 4px var(--success-glow); }
  50% { box-shadow: 0 0 12px var(--success-glow), 0 0 20px rgba(16, 185, 129, 0.15); }
}

@keyframes pulse-yellow {
  0%, 100% { box-shadow: 0 0 4px var(--warning-glow); }
  50% { box-shadow: 0 0 12px var(--warning-glow), 0 0 20px rgba(245, 158, 11, 0.15); }
}

/* ── Spinner ── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Toast / Alerts ── */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  border: 1px solid;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.3);
  color: #fcd34d;
}

/* ── Table ── */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

tbody td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

tbody tr:hover {
  background: var(--bg-glass);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  font-size: var(--font-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
}

.badge-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fcd34d;
}

.badge-info {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp 0.5s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.3s ease-out;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}