:root {
  --bg-primary: #0a0c14;
  --bg-card: rgba(16, 20, 36, 0.75);
  --bg-card-hover: rgba(22, 28, 50, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 242, 254, 0.3);
  
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-purple: #7928ca;
  --accent-magenta: #ff0080;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-glow-cyan: 0 0 25px rgba(0, 242, 254, 0.25);
  --shadow-glow-rose: 0 0 25px rgba(244, 63, 94, 0.25);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Background Ambient Orbs */
.app-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-cyan), var(--accent-blue));
  top: -150px;
  right: -100px;
}

.orb-2 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--accent-purple), var(--accent-magenta));
  bottom: 50px;
  left: -150px;
}

.orb-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #3b82f6, #06b6d4);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.12;
}

/* Auth Wrapper & Card */
.auth-wrapper {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7), var(--shadow-glow-cyan);
  animation: fadeInDown 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-size: 22px;
  margin: 0 auto 16px;
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
}

.auth-header h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.auth-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.input-with-icon i {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

.input-with-icon .form-control {
  padding-left: 40px;
}

.auth-error-msg {
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.4);
  color: var(--accent-rose);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.btn-block {
  width: 100%;
  padding: 13px;
  font-size: 14px;
}

/* Header & Profile */
.container {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-size: 20px;
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.4);
}

.brand-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(120deg, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 13px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.user-profile-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.user-profile-badge i {
  color: var(--accent-cyan);
}

.btn-logout {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  transition: all 0.2s;
}

.btn-logout:hover {
  color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.15);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.6px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-idle .status-dot { background-color: var(--text-muted); }
.status-idle { color: var(--text-secondary); border-color: rgba(255, 255, 255, 0.1); }

.status-running {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--accent-emerald);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
}
.status-running .status-dot {
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseGreen 1.5s infinite;
}

.status-completed {
  background: rgba(0, 242, 254, 0.12);
  border-color: rgba(0, 242, 254, 0.4);
  color: var(--accent-cyan);
}
.status-completed .status-dot { background-color: var(--accent-cyan); }

.status-error {
  background: rgba(244, 63, 94, 0.15);
  border-color: rgba(244, 63, 94, 0.4);
  color: var(--accent-rose);
}
.status-error .status-dot { background-color: var(--accent-rose); }

@keyframes pulseGreen {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

@media (max-width: 1024px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .metrics-grid { grid-template-columns: 1fr; }
}

.metric-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.main-speed-card {
  border-color: rgba(0, 242, 254, 0.3);
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.08) 0%, rgba(16, 20, 36, 0.8) 100%);
}

.main-speed-card.running {
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.metric-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.unit-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px;
  border-radius: var(--radius-sm);
}

.unit-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.2s;
}

.unit-btn.active {
  background: var(--accent-cyan);
  color: #000;
}

.metric-value-wrapper {
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.metric-main-value {
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.metric-main-unit {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-cyan);
}

.metric-large-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
}

.time-val {
  color: var(--accent-blue);
}

.metric-sub-stats {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 8px;
  margin-top: 4px;
}

.metric-sub-stats strong {
  color: var(--text-secondary);
}

.badge-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.badge-neutral {
  color: var(--accent-cyan);
  border-color: rgba(0, 242, 254, 0.3);
}

/* Progress bar inside card */
.progress-container {
  margin-top: 6px;
}

.progress-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  position: relative;
}

.progress-bar.animated-stripes {
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.2) 75%,
    transparent 75%,
    transparent
  );
  background-size: 20px 20px;
  animation: moveStripes 1s linear infinite;
}

@keyframes moveStripes {
  0% { background-position: 0 0; }
  100% { background-position: 20px 0; }
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* VPN Info Card */
.vpn-info-body {
  min-height: 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.vpn-info-placeholder {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.vpn-detail-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.vpn-ip-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-emerald);
}

.vpn-geo-row {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-xs-test {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-xs-test:hover {
  background: rgba(0, 242, 254, 0.2);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Section Card */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

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

.card-title i {
  color: var(--accent-cyan);
}

.live-pulse {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 242, 254, 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 242, 254, 0.25);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

/* Chart Section */
.chart-section {
  margin-bottom: 24px;
}

.chart-container {
  height: 220px;
  position: relative;
}

/* Main Layout Grid */
.main-layout-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

@media (max-width: 900px) {
  .main-layout-grid { grid-template-columns: 1fr; }
}

/* Tabs */
.tabs-header {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  background: rgba(0, 0, 0, 0.25);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.tab-btn.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Form Styles */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.label-with-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.label-with-action .form-label {
  margin-bottom: 0;
}

.form-control {
  width: 100%;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-primary);
  transition: all 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.15);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 5px;
}

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

.input-addon {
  position: absolute;
  right: 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  pointer-events: none;
}

.form-range {
  width: 100%;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.highlight-text {
  color: var(--accent-cyan);
}

.divider {
  border: none;
  height: 1px;
  background: var(--border-color);
  margin: 18px 0;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 500px) {
  .form-grid { grid-template-columns: 1fr; }
}

.preset-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.preset-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s;
}

.preset-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

.preset-pill.active {
  background: rgba(0, 242, 254, 0.15);
  border-color: rgba(0, 242, 254, 0.4);
  color: var(--accent-cyan);
}

/* Action Buttons */
.action-buttons-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr auto;
  gap: 10px;
}

@media (max-width: 600px) {
  .action-buttons-grid { grid-template-columns: 1fr 1fr; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #000;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
}

.btn-danger {
  background: linear-gradient(135deg, var(--accent-rose), #be123c);
  color: #fff;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.3);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-muted);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.btn-text {
  background: transparent;
  border: none;
  color: var(--accent-cyan);
  font-size: 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-text:hover {
  text-decoration: underline;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Terminal Logs */
.terminal-card {
  display: flex;
  flex-direction: column;
  height: 380px;
}

.terminal-body {
  flex: 1;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.log-line {
  word-break: break-all;
  line-height: 1.4;
}

.log-time {
  color: var(--text-muted);
  margin-right: 6px;
}

.log-info { color: #cbd5e1; }
.log-success { color: var(--accent-emerald); }
.log-warning { color: var(--accent-amber); }
.log-error { color: var(--accent-rose); }

/* Note Card */
.info-note-card {
  background: rgba(0, 242, 254, 0.03);
  border-color: rgba(0, 242, 254, 0.15);
}

.info-note-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.info-note-text {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.info-note-text code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: rgba(16, 20, 36, 0.95);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  backdrop-filter: blur(20px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideInRight 0.3s ease;
  min-width: 260px;
}

.toast-success { border-color: var(--accent-emerald); }
.toast-error { border-color: var(--accent-rose); }
.toast-info { border-color: var(--accent-cyan); }

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

.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }