/* ── CSS Reset & Global Styles ── */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--fs-base);
  font-weight: var(--fw-normal);
  line-height: var(--lh-normal);
  color: var(--text-primary);
  background-color: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

img, video {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  font-size: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

/* ── Scrollbar ── */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bg-hover);
}

/* ── Focus Styles ── */

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ── Utility Classes ── */

.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.w-full { width: 100%; }
.relative { position: relative; }

/* ── Common Components ── */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0);
  transition: background var(--transition-fast);
}

.btn:hover::after {
  background: rgba(255, 255, 255, 0.06);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--gradient-primary-hover);
  box-shadow: 0 0 32px rgba(124, 109, 245, 0.35);
}

.btn-secondary {
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}

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

.btn-danger {
  background: var(--color-error);
  color: white;
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--fs-sm);
  border-radius: var(--radius-sm);
}

.btn-icon {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--bg-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

/* Inputs */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-base);
  transition: all var(--transition-base);
}

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

.input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(124, 109, 245, 0.15);
}

/* Toggle Switch */
.toggle-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: all var(--transition-base);
}

.toggle.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle.active::after {
  left: 22px;
  background: white;
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-admin {
  background: linear-gradient(135deg, rgba(253, 121, 168, 0.2), rgba(253, 121, 168, 0.1));
  color: var(--accent-secondary);
  border: 1px solid rgba(253, 121, 168, 0.25);
}

.badge-success {
  background: rgba(0, 184, 148, 0.15);
  color: var(--color-success);
  border: 1px solid rgba(0, 184, 148, 0.25);
}

/* Connection Status Dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.connected {
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(0, 184, 148, 0.6);
  animation: pulse-dot 2s ease infinite;
}

.status-dot.connecting {
  background: var(--color-warning);
  box-shadow: 0 0 8px rgba(253, 203, 110, 0.5);
  animation: pulse-dot 1s ease infinite;
}

.status-dot.disconnected {
  background: var(--color-error);
  box-shadow: 0 0 8px rgba(231, 76, 111, 0.5);
}

/* ── Keyframe Animations ── */

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-down {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes float-up {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  50% {
    opacity: 0.8;
    transform: translateY(-80px) scale(1.1);
  }
  100% {
    opacity: 0;
    transform: translateY(-160px) scale(0.9);
  }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(-100%) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(-100%) scale(0.95); }
}

/* Animation classes */
.animate-fade-in { animation: fade-in var(--transition-base) ease forwards; }
.animate-fade-in-up { animation: fade-in-up var(--transition-slow) ease forwards; }
.animate-scale-in { animation: scale-in var(--transition-base) ease forwards; }

/* ── Toast Notifications ── */

.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: toast-in 300ms ease forwards;
  pointer-events: auto;
  max-width: 380px;
  font-size: var(--fs-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.toast.toast-exiting {
  animation: toast-out 250ms ease forwards;
}

.toast-icon {
  font-size: var(--fs-lg);
  flex-shrink: 0;
}

.toast.success { border-left: 3px solid var(--color-success); }
.toast.error { border-left: 3px solid var(--color-error); }
.toast.info { border-left: 3px solid var(--color-info); }
.toast.warning { border-left: 3px solid var(--color-warning); }

/* ── Modal ── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fade-in 200ms ease;
  padding: var(--space-4);
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8);
  max-width: 440px;
  width: 100%;
  animation: scale-in 250ms ease;
}

.modal-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-3);
}

.modal-body {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--lh-relaxed);
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* ── Spinner ── */

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--glass-border);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}