/* ==========================================================================
   Postal API Email Status Dashboard — Modern Dark Theme Stylesheet
   ========================================================================== */

:root {
  --bg-main: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-surface-glass: rgba(15, 23, 42, 0.78);
  
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-focus: rgba(99, 102, 241, 0.5);
  --border-card: rgba(255, 255, 255, 0.08);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-primary-light: rgba(99, 102, 241, 0.15);

  --color-delivered: #10b981;
  --color-delivered-bg: rgba(16, 185, 129, 0.12);
  --color-delivered-border: rgba(16, 185, 129, 0.25);

  --color-sent: #38bdf8;
  --color-sent-bg: rgba(56, 189, 248, 0.12);
  --color-sent-border: rgba(56, 189, 248, 0.25);

  --color-hardfail: #f43f5e;
  --color-hardfail-bg: rgba(244, 63, 94, 0.12);
  --color-hardfail-border: rgba(244, 63, 94, 0.25);

  --color-softfail: #f59e0b;
  --color-softfail-bg: rgba(245, 158, 11, 0.12);
  --color-softfail-border: rgba(245, 158, 11, 0.25);

  --color-held: #a855f7;
  --color-held-bg: rgba(168, 85, 247, 0.12);
  --color-held-border: rgba(168, 85, 247, 0.25);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 25px -5px rgba(99, 102, 241, 0.35);

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 28px 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ==========================================================================
   Header & Top Navigation
   ========================================================================== */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 18px 24px;
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

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

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
  flex-shrink: 0;
}

.brand-title h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-title p {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.brand-title code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.15);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.1);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.mode-badge.demo {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.25);
}

.mode-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 8px currentColor;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* User Profile Badge & Logout */
.user-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 4px 6px 4px 6px;
  border-radius: var(--radius-full);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-email-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-logout {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(244, 63, 94, 0.15);
  color: #fda4af;
  border: 1px solid rgba(244, 63, 94, 0.3);
  text-decoration: none;
  transition: all 0.2s;
}

.btn-logout:hover {
  background: #f43f5e;
  color: #fff;
  border-color: #f43f5e;
}

/* Demo Banner Notice */
.banner-notice {
  display: none;
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.12), rgba(99, 102, 241, 0.12));
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  color: #fde68a;
  font-size: 0.88rem;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.banner-notice.active {
  display: flex;
}

.banner-notice a, .banner-notice button {
  color: #fff;
  background: rgba(245, 158, 11, 0.25);
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all 0.2s;
}

.banner-notice button:hover {
  background: rgba(245, 158, 11, 0.4);
}

/* ==========================================================================
   Metrics Grid
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s;
  box-shadow: var(--shadow-card);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.16);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--stat-color, var(--color-primary));
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--stat-bg, rgba(99, 102, 241, 0.12));
  color: var(--stat-color, var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.stat-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-mono);
  margin-top: 2px;
  line-height: 1.1;
}

/* ==========================================================================
   Main Content Panel & Toolbar
   ========================================================================== */
.content-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.toolbar {
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  flex: 1 1 280px;
  max-width: 480px;
  color: var(--text-muted);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
  color: #fff;
}

.search-box input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: inherit;
  width: 100%;
}

.search-box input::placeholder {
  color: var(--text-dim);
}

.filters-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-select {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  padding: 8px 14px;
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}

.filter-select:focus {
  border-color: var(--border-focus);
}

.filter-select option {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
}

/* ==========================================================================
   Buttons & UI Elements
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.45);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.18);
}

.btn-view {
  background: rgba(99, 102, 241, 0.12);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.25);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-view:hover {
  background: #6366f1;
  color: #fff;
  border-color: #6366f1;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: color 0.15s, background 0.15s;
}

.btn-close:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Table & Results
   ========================================================================== */
.table-container {
  overflow-x: auto;
  position: relative;
  min-height: 280px;
}

.email-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.email-table th {
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.email-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

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

.email-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.03);
}

.email-id-cell {
  font-family: var(--font-mono);
  font-weight: 600;
  color: #94a3b8;
  font-size: 0.84rem;
}

.email-recipient-cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.email-recipient-cell span:first-child {
  font-weight: 600;
  color: #fff;
}

.email-recipient-cell .sub-text {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.email-subject-cell {
  color: #cbd5e1;
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.timestamp-cell {
  font-size: 0.84rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: capitalize;
  white-space: nowrap;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

.status-badge.Delivered {
  background: var(--color-delivered-bg);
  color: var(--color-delivered);
  border: 1px solid var(--color-delivered-border);
}

.status-badge.Sent {
  background: var(--color-sent-bg);
  color: var(--color-sent);
  border: 1px solid var(--color-sent-border);
}

.status-badge.HardFail {
  background: var(--color-hardfail-bg);
  color: var(--color-hardfail);
  border: 1px solid var(--color-hardfail-border);
}

.status-badge.SoftFail {
  background: var(--color-softfail-bg);
  color: var(--color-softfail);
  border: 1px solid var(--color-softfail-border);
}

.status-badge.Held {
  background: var(--color-held-bg);
  color: var(--color-held);
  border: 1px solid var(--color-held-border);
}

/* Loading & Empty States */
.table-loading, .table-empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(99, 102, 241, 0.2);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin: 0 auto;
  animation: spin 0.8s linear infinite;
}

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

/* ==========================================================================
   Pagination
   ========================================================================== */
.pagination-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.01);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.8);
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}

.modal-body {
  padding: 22px;
  overflow-y: auto;
  font-size: 0.9rem;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* Modal Detail Grid */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.detail-item {
  background: var(--bg-surface-elevated);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.detail-item .label {
  font-size: 0.76rem;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.detail-item .value {
  color: #fff;
  font-weight: 500;
  word-break: break-all;
}

.json-box {
  background: #050811;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #93c5fd;
  overflow-x: auto;
  max-height: 240px;
  line-height: 1.5;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: #fff;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--border-focus);
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1100;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 420px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-card);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: opacity 0.3s, transform 0.3s;
  animation: toast-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.toast.success {
  border-left: 4px solid var(--color-delivered);
}

.toast.error {
  border-left: 4px solid var(--color-hardfail);
}

.toast.info {
  border-left: 4px solid var(--color-sent);
}

.toast.warning {
  border-left: 4px solid var(--color-softfail);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
  .app-container {
    padding: 16px 14px;
    gap: 16px;
  }

  .top-nav {
    padding: 14px 16px;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: 100%;
  }

  .filters-group {
    justify-content: flex-start;
  }

  .email-subject-cell {
    max-width: 180px;
  }
}