/* ============================================================
   layout.css — Sidebar, Main Content, Mobile Header, Auth
   ============================================================ */

/* Auth Page */
#authPage {
  display: flex; align-items: center; justify-content: center;
  height: 100%; padding: 40px 24px;
  background: var(--bg-base);
}

.auth-container {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(80px) saturate(200%) brightness(1.08);
  -webkit-backdrop-filter: blur(80px) saturate(200%) brightness(1.08);
  border-radius: var(--radius-lg);
  padding: 28px 28px 24px;
  max-width: 400px; width: 100%;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.25);
  position: relative;
}

.auth-brand { text-align: center; margin-bottom: 20px; }
.auth-logo {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; margin-bottom: 12px;
  box-shadow: 0 4px 12px rgba(0, 122, 255, .25);
}
.auth-brand h1 {
  font-size: 22px; font-weight: 700;
  letter-spacing: -.5px; color: var(--text);
}
.auth-brand p {
  color: var(--text-muted); font-size: 13px; margin-top: 4px; font-weight: 400;
  letter-spacing: 2px;
}

.auth-switch {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  margin-bottom: 16px;
  padding: 4px;
  background: var(--bg-input);
  border-radius: 12px;
}

.auth-switch-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-switch-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, .18);
}

.auth-switch-btn.active {
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

/* App Layout */
#appPage { height: 100%; display: flex; overflow: hidden; }

/* Sidebar */
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(80px) saturate(200%) brightness(1.03);
  -webkit-backdrop-filter: blur(80px) saturate(200%) brightness(1.03);
  border-right: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 2px 0 20px rgba(0, 0, 0, .04), inset -1px 0 0 rgba(255, 255, 255, 0.2);
  display: flex; flex-direction: column;
  z-index: 100;
  transition: width var(--transition-slow);
  flex-shrink: 0;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }

.sidebar-header {
  display: flex; align-items: center; gap: 12px;
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: padding var(--transition-slow);
  position: relative;
}
.sidebar.collapsed .sidebar-header {
  padding: 16px 14px;
  flex-direction: column; gap: 4px; justify-content: center;
}
.sidebar-logo {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 122, 255, .20);
}
.sidebar-title {
  font-size: 16px; font-weight: 600;
  letter-spacing: -.3px; white-space: nowrap; overflow: hidden;
  color: var(--text-main);
  transition: opacity var(--transition-fast), width var(--transition-slow);
}
.sidebar.collapsed .sidebar-title {
  opacity: 0; width: 0; overflow: hidden; margin: 0; padding: 0;
}
.sidebar-toggle {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; padding: 6px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px; transition: all var(--transition-fast);
  margin-left: auto; flex-shrink: 0;
}
.sidebar-toggle:hover { color: var(--text); background: var(--bg-hover); }
.sidebar.collapsed .sidebar-toggle { margin-left: 0; width: 36px; }
.sidebar.collapsed .sidebar-toggle svg { transform: rotate(180deg); }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.nav-section { margin-bottom: 2px; }
.nav-section-title {
  font-size: 11px; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase;
  letter-spacing: .5px; padding: 16px 18px 6px;
  white-space: nowrap; overflow: hidden;
  transition: opacity var(--transition-fast), height var(--transition-slow);
}
.sidebar.collapsed .nav-section-title {
  opacity: 0; height: 0; padding: 0; overflow: hidden;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  width: calc(100% - 16px); margin: 1px 8px;
  padding: 7px 12px;
  background: none; border: none;
  color: var(--text-secondary); cursor: pointer;
  font-size: 13px; font-weight: 400; font-family: inherit;
  transition: all var(--transition-fast);
  text-align: left; position: relative; white-space: nowrap;
  border-radius: 8px;
  text-decoration: none;
}
.sidebar.collapsed .nav-item { padding: 9px 0; justify-content: center; width: calc(100% - 12px); margin: 1px 6px; }
.nav-item:hover { color: var(--text-main); background: rgba(0, 0, 0, .04); }
.nav-item.active {
  color: var(--primary);
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  box-shadow: 0 1px 6px rgba(0, 122, 255, .08), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  font-weight: 500;
}
.nav-item svg { flex-shrink: 0; opacity: .5; transition: opacity var(--transition-fast); }
.nav-item:hover svg { opacity: .7; }
.nav-item.active svg { opacity: 1; }
.nav-item span {
  overflow: hidden; transition: opacity var(--transition-fast), width var(--transition-slow);
}
.sidebar.collapsed .nav-item span { opacity: 0; width: 0; }

.sidebar-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  transition: padding var(--transition-slow);
}
.sidebar.collapsed .sidebar-footer { padding: 12px; justify-content: center; }
.sidebar-user-wrap {
  display: flex; align-items: center; gap: 10px;
  overflow: hidden;
}
.sidebar-user-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 1px;
}
.sidebar-avatar {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 12px; font-weight: 600;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0, 122, 255, .20);
}
.sidebar-user {
  font-size: 13px; color: var(--text-main); font-weight: 400;
  white-space: nowrap; overflow: hidden;
  transition: opacity var(--transition-fast), width var(--transition-slow);
}
.sidebar-role {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition-fast), width var(--transition-slow);
}
.sidebar.collapsed .sidebar-user { opacity: 0; width: 0; overflow: hidden; }
.sidebar.collapsed .sidebar-role { opacity: 0; width: 0; overflow: hidden; }

/* Main Content */
.main-content {
  flex: 1; margin-left: var(--sidebar-width);
  padding: 20px 32px;
  height: 100%;
  overflow-y: auto; overflow-x: hidden;
  position: relative; z-index: 1;
  transition: margin-left var(--transition-slow);
}
.sidebar.collapsed ~ .main-content, .main-content.sidebar-collapsed {
  margin-left: var(--sidebar-collapsed);
}
.main-content.log-active {
  overflow-y: hidden;
}

/* Page Header */
.page-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 10px; flex-wrap: wrap; gap: 12px;
  padding-bottom: 0;
}
.page-title {
  font-size: 28px; font-weight: 700; letter-spacing: -.5px;
  color: var(--text-main);
}
.page-actions { display: flex; align-items: center; gap: 8px; }

/* Tab Content */
.tab-content { display: none; }
.tab-content.active { display: block; }
.tab-content.hidden { display: none !important; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes sidebarSlideIn {
  from { opacity: 0; transform: translateX(-20px) scale(0.97); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes rowSlideIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes dataFlow {
  0% { background-position: 0 0; }
  100% { background-position: 200px 0; }
}

@keyframes neonBreath {
  0%, 100% { opacity: .6; }
  50% { opacity: 1; }
}

@keyframes statusPulseRed {
  0%, 100% { box-shadow: 0 0 4px var(--error-glow); opacity: 1; }
  50% { box-shadow: 0 0 8px var(--error-glow); opacity: .85; }
}
@keyframes statusPulseGreen {
  0%, 100% { box-shadow: 0 0 4px var(--success-glow); transform: scale(1); }
  50% { box-shadow: 0 0 8px var(--success-glow); transform: scale(1.1); }
}

.data-flow-line {
  height: 2px;
  margin-bottom: 16px;
  border-radius: 1px;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 20px,
    rgba(0, 122, 255, .08) 20px,
    rgba(0, 122, 255, .08) 40px,
    transparent 40px,
    transparent 60px,
    rgba(88, 86, 214, .06) 60px,
    rgba(88, 86, 214, .06) 80px
  );
  background-size: 200px 2px;
  animation: dataFlow 4s linear infinite;
}

.tab-content.active:not(.log-page) {
  animation: fadeIn .5s cubic-bezier(.25, .46, .45, .94);
  height: 100%;
}

/* Toast */
.toast {
  position: fixed; top: 24px; right: 24px; z-index: 9999;
  padding: 14px 22px; border-radius: var(--radius);
  font-size: 14px; font-weight: 500;
  transform: translateX(calc(100% + 48px));
  transition: transform .4s cubic-bezier(.25, .46, .45, .94);
  max-width: 360px;
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(60px) saturate(200%);
  -webkit-backdrop-filter: blur(60px) saturate(200%);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-main);
}
.toast.show { transform: translateX(0); }
.toast.success {
  background: rgba(255, 255, 255, .15); border: 1px solid rgba(52, 199, 89, .2);
  color: var(--success);
}
.toast.error {
  background: rgba(255, 255, 255, .15); border: 1px solid rgba(255, 59, 48, .2);
  color: var(--error);
}

/* Mobile Header */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(80px) saturate(200%);
  -webkit-backdrop-filter: blur(80px) saturate(200%);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  z-index: 90;
  align-items: center;
  padding: 0 12px;
  gap: 12px;
  box-shadow: var(--shadow-sm);
}

.hamburger-btn {
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  transition: background var(--transition-fast);
}

.hamburger-btn:hover {
  background: var(--bg-hover);
}

.mobile-header-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -.3px;
}

/* Sidebar Backdrop */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .3);
  z-index: 99;
  opacity: 0;
  transition: opacity .4s cubic-bezier(.25, .46, .45, .94);
}

.sidebar-backdrop.active {
  display: block;
  opacity: 1;
}

/* Turnstile widget in auth form */
.turnstile-widget {
  display: flex;
  justify-content: center;
  margin: 4px 0 8px;
  min-height: 65px;
}
.turnstile-widget iframe {
  border-radius: 10px;
}

/* DNS Response Detail Modal */
.dns-detail-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.dns-detail-overlay.hidden { display: none; }

.dns-detail-modal {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0, 0, 0, .08);
  overflow: hidden;
  position: relative;
}
.dns-detail-modal::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
  pointer-events: none;
}

.dns-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  flex-shrink: 0;
}
.dns-detail-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}
.dns-detail-close {
  color: var(--text-muted);
}

.dns-detail-info {
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  background: rgba(0, 0, 0, .02);
  flex-shrink: 0;
}
.dns-detail-info-item {
  display: flex;
  align-items: center;
  gap: 5px;
}
.dns-detail-info-label {
  color: var(--text-secondary);
  font-weight: 400;
}
.dns-detail-info-value {
  color: var(--text-main);
  font-weight: 500;
}

.dns-detail-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
}
.dns-detail-body pre {
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}
.dns-detail-body .empty-response {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  padding: 20px 0;
  font-family: inherit;
}

/* URL Rule Loading status components */
.url-rule-loading-status-tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; font-weight: 500; line-height: 1.5; }
.url-rule-loading-status-tag.allowed { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.url-rule-loading-status-tag.disabled { background: var(--error-bg); color: var(--error); border: 1px solid var(--error-border); }
.url-rule-loading-status-tag.admin-exempt { background: var(--info-bg); color: var(--info); border: 1px solid var(--info-border); }
.url-rule-loading-status-tag.loading { background: var(--bg-input); color: var(--text-muted); border: 1px solid rgba(0,0,0,.06); }
.url-rule-loading-global-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 20px; border-bottom: 1px solid rgba(0,0,0,.04); }
.url-rule-loading-status-label { font-size: 13px; font-weight: 500; }
.url-rule-loading-global-actions { display: flex; gap: 8px; }
.url-rule-loading-status-wrapper { display: flex; align-items: center; gap: 0; flex-wrap: wrap; }
.url-rule-loading-reason { color: var(--text-muted); font-size: 12px; margin-left: 8px; }
.url-rule-loading-user-actions { display: flex; gap: 8px; }
.url-rule-loading-self-status { margin-bottom: 8px; padding: 0 20px; }
.url-rule-loading-admin-hint { color: var(--info); }