/* ============================================
   INDUSTRIAL FUTURIST CRYSTAL - Design System
   iconik Studio Monitor Admin Dashboard
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Core palette */
  --bg-void: #06060c;
  --bg-surface: #0a0a14;
  --bg-panel: rgba(12, 12, 22, 0.85);
  --bg-panel-hover: rgba(18, 18, 32, 0.9);

  /* Accent colors */
  --laser-red: #ff2a2a;
  --laser-red-dim: rgba(255, 42, 42, 0.15);
  --laser-red-glow: rgba(255, 42, 42, 0.4);
  --holo-cyan: #00f5ff;
  --holo-cyan-dim: rgba(0, 245, 255, 0.12);
  --holo-cyan-glow: rgba(0, 245, 255, 0.4);

  /* Status */
  --status-ok: #00ff88;
  --status-fail: #ff2a2a;
  --status-warn: #ffaa00;

  /* Text */
  --text-primary: #e0e0e8;
  --text-secondary: rgba(224, 224, 232, 0.6);
  --text-muted: rgba(224, 224, 232, 0.3);

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-panel: rgba(255, 42, 42, 0.15);
  --border-active: rgba(0, 245, 255, 0.3);

  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Cascadia Code', 'Courier New', monospace;
  --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Radii */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
}

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

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Subtle grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(0, 245, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 255, 0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

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

a:hover {
  text-decoration: underline;
}

/* --- Layout --- */
#app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  border-bottom: 1px solid var(--border-panel);
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.app-logo-mark {
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--holo-cyan);
  text-transform: uppercase;
  opacity: 0.7;
}

.app-logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--laser-red);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.header-user {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-user-email {
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.app-nav {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 0 var(--space-xl);
}

.nav-tab {
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-panel);
}

.nav-tab.active {
  color: var(--holo-cyan);
  border-bottom-color: var(--holo-cyan);
}

.app-content {
  flex: 1;
  padding: var(--space-xl);
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

/* --- Corner Bracket HUD Panel --- */
.hud-panel {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border-panel);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.hud-panel:hover {
  border-color: var(--laser-red-glow);
  box-shadow: 0 0 20px rgba(255, 42, 42, 0.05);
}

/* Corner brackets */
.hud-panel::before,
.hud-panel::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--holo-cyan);
  opacity: 0.4;
}

.hud-panel::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.hud-panel::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid;
  border-right: 2px solid;
}

/* --- Section Headers --- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--holo-cyan);
  opacity: 0.7;
}

.section-count {
  font-size: 12px;
  color: var(--text-muted);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  background: transparent;
}

.btn-primary {
  color: var(--laser-red);
  border-color: var(--laser-red);
  background: var(--laser-red-dim);
}

.btn-primary:hover {
  background: rgba(255, 42, 42, 0.25);
  box-shadow: 0 0 12px rgba(255, 42, 42, 0.2);
}

.btn-secondary {
  color: var(--holo-cyan);
  border-color: rgba(0, 245, 255, 0.3);
  background: var(--holo-cyan-dim);
}

.btn-secondary:hover {
  background: rgba(0, 245, 255, 0.2);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.15);
}

.btn-danger {
  color: var(--status-fail);
  border-color: rgba(255, 42, 42, 0.3);
}

.btn-danger:hover {
  background: rgba(255, 42, 42, 0.15);
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: 10px;
}

.btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Logout button */
.btn-logout {
  color: var(--text-secondary);
  border-color: var(--border-subtle);
  font-size: 10px;
}

.btn-logout:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* --- Toggle Switch --- */
.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  display: inline-block;
}

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

.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  left: 2px;
  bottom: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all 0.2s ease;
}

.toggle-switch input:checked + .toggle-slider {
  background: rgba(0, 255, 136, 0.15);
  border-color: rgba(0, 255, 136, 0.3);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(16px);
  background: var(--status-ok);
  box-shadow: 0 0 6px rgba(0, 255, 136, 0.4);
}

/* --- Form Inputs --- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.form-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-input:focus {
  border-color: var(--holo-cyan);
  box-shadow: 0 0 8px rgba(0, 245, 255, 0.1);
}

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

.form-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* --- Subscriber Card --- */
.subscriber-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.subscriber-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.subscriber-info {
  flex: 1;
  min-width: 0;
}

.subscriber-name {
  font-size: 13px;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.subscriber-target {
  font-size: 11px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.subscriber-badge {
  font-size: 9px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 2px;
  white-space: nowrap;
}

.subscriber-badge.email {
  color: var(--holo-cyan);
  background: var(--holo-cyan-dim);
  border: 1px solid rgba(0, 245, 255, 0.2);
}

.subscriber-badge.slack {
  color: var(--laser-red);
  background: var(--laser-red-dim);
  border: 1px solid rgba(255, 42, 42, 0.2);
}

.subscriber-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* --- History Table --- */
.history-table {
  width: 100%;
  border-collapse: collapse;
}

.history-table th {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.history-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 12px;
  vertical-align: middle;
}

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

/* Status dot */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: var(--space-sm);
}

.status-dot.sent {
  background: var(--status-ok);
  box-shadow: 0 0 6px rgba(0, 255, 136, 0.4);
}

.status-dot.failed {
  background: var(--status-fail);
  box-shadow: 0 0 6px rgba(255, 42, 42, 0.4);
}

/* --- Login Page --- */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-xl);
}

.login-panel {
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.login-header .app-logo-mark {
  margin-bottom: var(--space-sm);
}

.login-header .app-logo-text {
  font-size: 20px;
}

.login-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: var(--space-sm);
}

.login-error {
  background: rgba(255, 42, 42, 0.1);
  border: 1px solid rgba(255, 42, 42, 0.3);
  color: var(--laser-red);
  padding: var(--space-sm) var(--space-md);
  font-size: 12px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
  display: none;
}

.login-error.visible {
  display: block;
}

.login-form .btn-primary {
  width: 100%;
  justify-content: center;
  padding: var(--space-md);
  margin-top: var(--space-sm);
}

/* --- Inline Add Form --- */
.add-form {
  display: none;
  margin-top: var(--space-md);
}

.add-form.visible {
  display: block;
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 32px;
  margin-bottom: var(--space-md);
  opacity: 0.3;
}

.empty-state-text {
  font-size: 12px;
  letter-spacing: 1px;
}

/* --- Loading --- */
.loading {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.loading::after {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 1px solid var(--holo-cyan);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: var(--space-sm);
  vertical-align: middle;
}

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

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  animation: slideIn 0.2s ease;
  max-width: 400px;
}

.toast.success {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.3);
  color: var(--status-ok);
}

.toast.error {
  background: rgba(255, 42, 42, 0.1);
  border: 1px solid rgba(255, 42, 42, 0.3);
  color: var(--status-fail);
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
  .app-content {
    padding: var(--space-md);
  }

  .app-header {
    padding: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .subscriber-card {
    flex-wrap: wrap;
  }

  .history-table {
    font-size: 11px;
  }

  .history-table th,
  .history-table td {
    padding: var(--space-xs) var(--space-sm);
  }
}