/* ==========================================================
   SecureVault Web Application - Modern Stylesheet
   Color scheme: #1a1a2e (Navy), #e94560 (Crimson), #3498db (Blue)
   ========================================================== */

:root {
  --bg-main: #0d1117;
  --bg-surface: #161b22;
  --bg-card: #21262d;
  --bg-sidebar: #13141f;
  --bg-input: #0d1117;
  --border-color: #30363d;
  --border-focus: #e94560;

  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --text-dim: #6e7681;

  --primary: #e94560;
  --primary-hover: #c73652;
  --primary-active: #a82d45;

  --secondary: #3498db;
  --secondary-hover: #2980b9;

  --success: #2ea043;
  --warning: #f39c12;
  --danger: #da3633;
  --danger-hover: #b62324;

  --purple: #9b59b6;
  --purple-hover: #8e44ad;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-main: #f4f6f9;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-sidebar: #1a1a2e;
  --bg-input: #ffffff;
  --border-color: #e1e4e8;
  --border-focus: #e94560;

  --text-main: #24292e;
  --text-muted: #586069;
  --text-dim: #959da5;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.15);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  display: flex;
  overflow-x: hidden;
}

/* ----------------------------------------------------------
   App Container & Layout
   ---------------------------------------------------------- */
#app {
  display: flex;
  width: 100vw;
  min-height: 100vh;
}

/* ----------------------------------------------------------
   Auth Screen (Setup & Login)
   ---------------------------------------------------------- */
.auth-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 100vh;
  padding: 24px;
  background: radial-gradient(circle at 50% 20%, #1f2438 0%, #0d1117 70%);
}

.auth-card {
  width: 100%;
  max-width: 460px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.3s ease;
}

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-header .logo-icon {
  font-size: 48px;
  margin-bottom: 12px;
  display: inline-block;
  animation: pulse 2s infinite ease-in-out;
}

.auth-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.auth-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
}

/* Auth Tabs */
.auth-tabs {
  display: flex;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
  gap: 4px;
}

.auth-tab-btn {
  flex: 1;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: calc(var(--radius-sm) - 2px);
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.auth-tab-btn:hover {
  color: var(--text-main);
}

.auth-tab-btn.active {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.auth-switch-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
}

.auth-switch-link a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  margin-left: 4px;
}

.auth-switch-link a:hover {
  text-decoration: underline;
}

/* User Account Chip in Header & Sidebar */
.user-account-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}

.user-account-chip .avatar {
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

.account-card-sidebar {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.account-card-sidebar .user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.account-card-sidebar .user-email {
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 160px;
}

.account-card-sidebar .user-label {
  font-size: 11px;
  color: var(--text-dim);
}

/* ----------------------------------------------------------
   Dashboard Layout
   ---------------------------------------------------------- */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 20px;
}

.sidebar-brand .brand-icon {
  font-size: 26px;
}

.sidebar-brand .brand-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.3px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: #c9d1d9;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background-color: rgba(233, 69, 96, 0.15);
  color: #ffffff;
}

.nav-item.active {
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(233, 69, 96, 0.3);
}

.nav-item .nav-icon {
  font-size: 18px;
  width: 24px;
  display: inline-flex;
  justify-content: center;
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lock-btn {
  background-color: rgba(233, 69, 96, 0.2);
  color: #ff7b92;
  border: 1px solid rgba(233, 69, 96, 0.4);
}

.lock-btn:hover {
  background-color: var(--primary);
  color: #ffffff;
}

/* Main Content Area */
.main-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-main);
  overflow-y: auto;
  min-width: 0;
  height: 100vh;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.security-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(46, 160, 67, 0.15);
  color: var(--success);
  border: 1px solid rgba(46, 160, 67, 0.3);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.security-badge .dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--success);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 24px;
  cursor: pointer;
}

/* Page Body */
.page-body {
  padding: 32px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* ----------------------------------------------------------
   Stats Overview
   ---------------------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.stat-icon.blue { background-color: rgba(52, 152, 219, 0.15); color: var(--secondary); }
.stat-icon.green { background-color: rgba(46, 160, 67, 0.15); color: var(--success); }
.stat-icon.orange { background-color: rgba(243, 156, 18, 0.15); color: var(--warning); }
.stat-icon.red { background-color: rgba(233, 69, 96, 0.15); color: var(--primary); }

.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
}

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

/* ----------------------------------------------------------
   Forms & Inputs
   ---------------------------------------------------------- */
.form-group {
  margin-bottom: 20px;
}

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

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

.input-field {
  width: 100%;
  padding: 12px 14px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-field:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.2);
}

.input-toggle-btn {
  position: absolute;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
}

.input-toggle-btn:hover {
  color: var(--text-main);
}

/* ----------------------------------------------------------
   Buttons
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
  user-select: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.btn-primary:active {
  background-color: var(--primary-active);
}

.btn-secondary {
  background-color: var(--secondary);
  color: #ffffff;
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

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

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-block {
  width: 100%;
}

/* ----------------------------------------------------------
   Password Strength Meter
   ---------------------------------------------------------- */
.strength-meter {
  margin-top: 8px;
}

.strength-bar-track {
  height: 6px;
  background-color: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  gap: 2px;
}

.strength-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 3px;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.strength-bar-fill.weak {
  width: 33%;
  background-color: var(--danger);
}

.strength-bar-fill.medium {
  width: 66%;
  background-color: var(--warning);
}

.strength-bar-fill.strong {
  width: 100%;
  background-color: var(--success);
}

.strength-text {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin-top: 4px;
  font-weight: 600;
}

.strength-text.weak { color: var(--danger); }
.strength-text.medium { color: var(--warning); }
.strength-text.strong { color: var(--success); }

/* ----------------------------------------------------------
   Card Component
   ---------------------------------------------------------- */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-body {
  padding: 24px;
}

/* ----------------------------------------------------------
   Search & Filter Bar
   ---------------------------------------------------------- */
.table-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.search-box {
  position: relative;
  flex-grow: 1;
  max-width: 400px;
}

.search-box .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.search-box input {
  padding-left: 38px;
}

/* ----------------------------------------------------------
   Credentials Table
   ---------------------------------------------------------- */
.table-container {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  background-color: var(--bg-surface);
}

.vault-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.vault-table th {
  background-color: var(--bg-card);
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.vault-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.vault-table tbody tr {
  transition: background-color 0.15s ease;
}

.vault-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.site-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-favicon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: var(--secondary);
  flex-shrink: 0;
  overflow: hidden;
}

.site-favicon img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.site-info {
  display: flex;
  flex-direction: column;
}

.site-name {
  font-weight: 600;
  color: var(--text-main);
}

.site-date {
  font-size: 11px;
  color: var(--text-dim);
}

.password-masked {
  font-family: var(--font-mono);
  letter-spacing: 3px;
  color: var(--text-muted);
}

.password-revealed {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
  background-color: var(--bg-card);
  padding: 2px 8px;
  border-radius: 4px;
}

.actions-cell {
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}

.action-icon-btn {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.action-icon-btn:hover {
  color: var(--text-main);
  border-color: var(--text-muted);
  background-color: rgba(255, 255, 255, 0.08);
}

.action-icon-btn.copy:hover {
  color: var(--success);
  border-color: var(--success);
  background-color: rgba(46, 160, 67, 0.15);
}

.action-icon-btn.delete:hover {
  color: var(--danger);
  border-color: var(--danger);
  background-color: rgba(233, 69, 96, 0.15);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.6;
}

/* ----------------------------------------------------------
   Modals
   ---------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

.modal-dialog {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  animation: scaleUp 0.25s ease;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-main);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background-color: var(--bg-card);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ----------------------------------------------------------
   Toast Notifications & Clipboard Countdown Banner
   ---------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 2000;
}

.toast {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  animation: slideInRight 0.3s ease;
  font-size: 13px;
}

.toast.success { border-left-color: var(--success); }
.toast.danger { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

.clipboard-timer-banner {
  background: linear-gradient(90deg, #161b22 0%, #1f2438 100%);
  border: 1px solid rgba(233, 69, 96, 0.4);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  font-size: 13px;
  animation: fadeIn 0.3s ease;
}

.clipboard-timer-banner .countdown {
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
}

/* Code block & Encrypted display */
.code-block {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #79c0ff;
  word-break: break-all;
  user-select: all;
  margin-top: 8px;
}

/* Range sliders */
.slider-container {
  display: flex;
  align-items: center;
  gap: 16px;
}

.slider-container input[type="range"] {
  flex-grow: 1;
  accent-color: var(--primary);
}

.slider-val {
  font-family: var(--font-mono);
  font-weight: 700;
  min-width: 32px;
}

/* Checkbox group */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
}

/* ----------------------------------------------------------
   Animations
   ---------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.shake {
  animation: shake 0.4s ease;
}

/* ----------------------------------------------------------
   Responsive Mobile Adjustments
   ---------------------------------------------------------- */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .mobile-menu-btn {
    display: block;
  }

  .page-body {
    padding: 16px;
  }

  .top-bar {
    padding: 12px 16px;
  }

  .actions-cell {
    justify-content: flex-start;
  }

  .checkbox-grid {
    grid-template-columns: 1fr;
  }
}