/* ==========================================================================
   2FA Authenticator Vault Stylesheet
   Color Palette:
   - Dark BG: rgb(15, 15, 15)
   - Text: rgb(242, 242, 242)
   - Accent: Beige (#e6d5b8 / #d8c4a5)
   ========================================================================== */

:root {
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Default Dark Palette */
  --bg-primary: rgb(15, 15, 15);
  --bg-surface: rgb(24, 24, 24);
  --bg-card: rgb(30, 30, 32);
  --bg-card-hover: rgb(38, 38, 42);
  --bg-input: rgb(20, 20, 22);

  --text-primary: rgb(242, 242, 242);
  --text-secondary: rgb(160, 160, 165);
  --text-muted: rgb(110, 110, 115);

  --accent-beige: #e6d5b8;
  --accent-beige-hover: #dfcfbe;
  --accent-beige-active: #cbb89d;
  --accent-beige-text: #171512;
  --accent-beige-glow: rgba(230, 213, 184, 0.15);
  --accent-border: rgba(230, 213, 184, 0.25);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(230, 213, 184, 0.35);

  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;

  --sidebar-width: 260px;
  --sidebar-collapsed-width: 76px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-primary: #f6f4f0;
  --bg-surface: #eae6de;
  --bg-card: #ffffff;
  --bg-card-hover: #fcfbf9;
  --bg-input: #ffffff;

  --text-primary: #1c1917;
  --text-secondary: #57534e;
  --text-muted: #8c857b;

  --accent-beige: #8c7355;
  --accent-beige-hover: #786145;
  --accent-beige-active: #634f36;
  --accent-beige-text: #ffffff;
  --accent-beige-glow: rgba(140, 115, 85, 0.15);
  --accent-border: rgba(140, 115, 85, 0.3);

  --border-color: rgba(0, 0, 0, 0.09);
  --border-color-hover: rgba(140, 115, 85, 0.4);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.12);
}

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

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

/* Helper Utility */
.hidden {
  display: none !important;
}

/* Lock Screen Overlay */
.lock-screen {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.lock-screen.active {
  opacity: 1;
  pointer-events: auto;
}

.lock-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: lockCardAppear 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.shield-badge {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background: var(--accent-beige-glow);
  color: var(--accent-beige);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid var(--accent-border);
}

.lock-header h1 {
  font-size: 1.65rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.lock-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

/* Forms & Inputs */
.input-group {
  margin-bottom: 20px;
  text-align: left;
}

.input-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

input[type="password"],
input[type="text"],
select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, select:focus {
  outline: none;
  border-color: var(--accent-beige);
  box-shadow: 0 0 0 3px var(--accent-beige-glow);
}

.toggle-pw-btn {
  position: absolute;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;

  &:hover {
    color: var(--text-primary);
  }
}

.error-msg {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--danger-color);
  font-size: 0.85rem;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.rate-limit-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--warning-color);
  font-size: 0.82rem;
  margin-bottom: 16px;
  padding: 8px 12px;
  background: rgba(245, 158, 11, 0.1);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-beige {
  background-color: var(--accent-beige);
  color: var(--accent-beige-text);
  font-weight: 600;

  &:hover {
    background-color: var(--accent-beige-hover);
    color: var(--accent-beige-text);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-beige-glow);
  }

  &:active {
    background-color: var(--accent-beige-active);
    transform: translateY(0);
  }
}

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

  &:hover {
    border-color: var(--border-color-hover);
    background-color: var(--bg-card);
  }
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);

  &:hover {
    color: var(--text-primary);
    border-color: var(--accent-border);
    background: var(--bg-surface);
  }
}

.lock-footer-info {
  margin-top: 24px;
  display: flex;
  justify-content: center;
}

.info-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

/* App Main Layout: Left Sidebar + Main Content */
.app-container {
  display: flex;
  min-height: 100vh;
  width: 100%;
  animation: fadeIn 0.3s ease;
}

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

/* Sidebar Styling */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-card);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 16px;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: width var(--transition-smooth), transform var(--transition-smooth);

  &.collapsed {
    width: var(--sidebar-collapsed-width);

    .brand-text,
    .timer-label-box,
    .item-text {
      display: none;
    }

    .sidebar-timer-box {
      justify-content: center;
      padding: 12px 8px;
    }

    .sidebar-item {
      justify-content: center;
      padding: 12px 0;
    }

    .sidebar-toggle-btn .collapse-icon {
      transform: rotate(180deg);
    }
  }
}

.sidebar-header {
  margin-bottom: 24px;
  padding: 0 4px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-beige);
  color: var(--accent-beige-text);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  white-space: nowrap;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Sidebar Timer Box */
.sidebar-timer-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.timer-label-box {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
  overflow: hidden;
}

.timer-title {
  font-size: 0.85rem;
  font-weight: 600;
}

.timer-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Global Timer Ring */
.global-timer-ring {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;

  svg {
    transform: rotate(-90deg);
  }

  .circle-progress {
    transition: stroke-dasharray 1s linear, stroke var(--transition-fast);
  }

  .timer-text {
    position: absolute;
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent-beige);
  }
}

.global-timer-ring.warning .timer-text {
  color: var(--warning-color);
}
.global-timer-ring.warning .circle-progress {
  stroke: var(--warning-color);
}

/* Sidebar Nav Items */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  white-space: nowrap;

  &:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
    border-color: var(--border-color);
  }
}

/* Fixed contrast for Add New Key button */
.sidebar-item.btn-beige {
  background-color: var(--accent-beige);
  color: var(--accent-beige-text) !important;
  font-weight: 600;
  border: 1px solid var(--accent-border);

  svg {
    stroke: var(--accent-beige-text);
  }

  .item-text {
    color: var(--accent-beige-text) !important;
    font-weight: 600;
  }

  &:hover {
    background-color: var(--accent-beige-hover);
    color: var(--accent-beige-text) !important;
    box-shadow: 0 4px 12px var(--accent-beige-glow);
  }
}

/* Sidebar Footer / Toggle Button */
.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.sidebar-toggle-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);

  &:hover {
    color: var(--text-primary);
    border-color: var(--accent-border);
  }

  .collapse-icon {
    transition: transform var(--transition-smooth);
    flex-shrink: 0;
  }
}

/* Theme Toggle Icons */
[data-theme="dark"] .light-icon { display: block; }
[data-theme="dark"] .dark-icon { display: none; }
[data-theme="light"] .light-icon { display: none; }
[data-theme="light"] .dark-icon { display: block; }

/* Main Wrapper & Top Header */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-smooth);
}

.sidebar.collapsed ~ .main-wrapper {
  margin-left: var(--sidebar-collapsed-width);
}

.top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 32px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);

  .mobile-menu-btn {
    display: none;
  }
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  padding-left: 42px;
  padding-right: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);

  &:focus {
    background: var(--bg-input);
  }
}

.clear-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;

  &:hover {
    color: var(--text-primary);
  }
}

.top-security-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

/* Main Content Area */
.main-content {
  padding: 32px;
  flex: 1;
}

.accounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

/* Card Styling */
.otp-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: space-between;

  &:hover {
    transform: translateY(-2px);
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-md);
  }
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.issuer-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.issuer-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-beige);
  flex-shrink: 0;

  svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
  }
}

.account-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.issuer-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.account-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.card-type-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

/* OTP Display Section */
.otp-display-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  position: relative;
}

.otp-code {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  user-select: all;
}

.copy-btn {
  background: var(--accent-beige);
  color: var(--accent-beige-text);
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);

  &:hover {
    background: var(--accent-beige-hover);
    transform: scale(1.03);
  }

  &:active {
    transform: scale(0.97);
  }
}

.copy-btn.copied {
  background: var(--success-color);
  color: #ffffff;
}

/* Card Progress Bar */
.card-progress-bar {
  height: 4px;
  background: var(--bg-surface);
  border-radius: var(--radius-full);
  overflow: hidden;

  .progress-fill {
    height: 100%;
    background: var(--accent-beige);
    transition: width 1s linear, background-color var(--transition-fast);
  }
}

.card-progress-bar.warning .progress-fill {
  background: var(--danger-color);
}

/* Card Actions (HOTP / Delete) */
.card-footer {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hotp-btn {
  font-size: 0.8rem;
  padding: 6px 12px;
}

.card-del-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;

  &:hover {
    color: var(--danger-color);
  }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  margin-top: 20px;

  .empty-icon {
    font-size: 2.8rem;
    margin-bottom: 12px;
  }

  h3 {
    font-size: 1.2rem;
    margin-bottom: 6px;
  }

  p {
    color: var(--text-muted);
    font-size: 0.9rem;
  }
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 600;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  width: 100%;
  max-width: 480px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  animation: modalAppear 0.25s ease-out;
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;

  h2 {
    font-size: 1.3rem;
    font-weight: 700;
  }
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.settings-section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);

  &:last-child {
    border-bottom: none;
    margin-bottom: 0;
  }

  h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--accent-beige);
  }
}

.backup-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.file-input-label {
  cursor: pointer;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 700;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--accent-border);
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: auto;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
}

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

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-10px); }
}

/* Mobile Sidebar Drawer Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 90;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width) !important;
  }

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

  .sidebar-overlay.active {
    display: block;
  }

  .main-wrapper {
    margin-left: 0 !important;
  }

  .top-header {
    padding: 16px 20px;
    .mobile-menu-btn {
      display: inline-flex;
    }
  }

  .main-content {
    padding: 20px 16px;
  }
}