/* ═══════════════════════════════════════════════════════════════
   TempMail — Design System
   Dark Glassmorphism with animated gradient background
   ═══════════════════════════════════════════════════════════════ */

/* ── Design Tokens ────────────────────────────────────────────── */
:root {
  --color-bg:          #080818;
  --color-surface:     rgba(255, 255, 255, 0.05);
  --color-surface-hover: rgba(255, 255, 255, 0.08);
  --color-border:      rgba(255, 255, 255, 0.10);
  --color-border-glow: rgba(108, 99, 255, 0.40);

  --color-primary:     #6c63ff;
  --color-primary-end: #3b82f6;
  --color-danger:      #f87171;
  --color-success:     #34d399;
  --color-warning:     #fbbf24;

  --color-text:        #f1f5f9;
  --color-text-muted:  #94a3b8;
  --color-text-dim:    #64748b;

  --font-sans:  'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow-glass: 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06);
  --shadow-glow:  0 0 30px rgba(108,99,255,0.25);

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Accessibility ────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

/* ── Animated Background Orbs ────────────────────────────────── */
.bg-orbs {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
  animation: orb-float 20s ease-in-out infinite alternate;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #6c63ff, transparent 70%);
  top: -200px; left: -200px;
  animation-duration: 18s;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #3b82f6, transparent 70%);
  bottom: -150px; right: -150px;
  animation-duration: 22s;
  animation-direction: alternate-reverse;
}
.orb-3 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, #a855f7, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 25s;
  opacity: 0.12;
}
@keyframes orb-float {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 40px) scale(1.08); }
}

/* ── App Shell ────────────────────────────────────────────────── */
.app {
  position: relative; z-index: 1;
  min-height: 100dvh;
  display: flex; flex-direction: column;
  align-items: center;
  padding: 0 16px 64px;
}

/* ── Glass Card ───────────────────────────────────────────────── */
.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-glass);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.glass-card:hover {
  border-color: rgba(255,255,255,0.15);
}

/* ── Header ───────────────────────────────────────────────────── */
.header {
  width: 100%; max-width: 680px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0 8px;
}
.header-logo {
  display: flex; align-items: center; gap: 10px;
}
.logo-icon {
  width: 36px; height: 36px;
  filter: drop-shadow(0 0 12px rgba(108,99,255,0.6));
}
.logo-text {
  font-size: 1.25rem; font-weight: 700;
  background: linear-gradient(135deg, #fff 40%, #94a3b8);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header-badge {
  font-size: 0.7rem; font-weight: 500;
  color: var(--color-text-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 12px;
  letter-spacing: 0.03em;
}

/* ── Main Content ─────────────────────────────────────────────── */
.main {
  width: 100%; max-width: 680px;
  display: flex; flex-direction: column;
  gap: 20px;
  margin-top: 16px;
}

/* ── Address Card ─────────────────────────────────────────────── */
.address-card {
  padding: 32px;
  display: flex; flex-direction: column;
  gap: 20px;
}
.address-label {
  font-size: 0.78rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--color-text-muted);
}
.address-display {
  display: flex; align-items: center; gap: 12px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  min-height: 56px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.address-display:has(.address-text:not(:empty)) {
  border-color: var(--color-border-glow);
  box-shadow: 0 0 0 1px rgba(108,99,255,0.2) inset;
}
.address-text {
  flex: 1;
  font-size: 1rem; font-weight: 500;
  color: var(--color-text);
  word-break: break-all;
}
.address-text.placeholder { color: var(--color-text-dim); }
.mono { font-family: var(--font-mono); }

.address-actions {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
}
.history-wrapper { flex: 1; min-width: 120px; }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px;
  border: none; border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: 0.875rem; font-weight: 600;
  cursor: pointer; transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-end));
  color: #fff;
  box-shadow: 0 4px 15px rgba(108,99,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(108,99,255,0.50);
  filter: brightness(1.08);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.10);
  color: var(--color-text);
  border-color: rgba(255,255,255,0.2);
}

.btn-icon {
  background: rgba(255,255,255,0.08);
  color: var(--color-text-muted);
  padding: 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.btn-icon:hover { background: rgba(255,255,255,0.15); color: var(--color-text); }
.btn-icon svg { width: 18px; height: 18px; }

.btn-danger-ghost {
  background: transparent;
  color: var(--color-danger);
  padding: 8px;
  border-radius: var(--radius-sm);
  opacity: 0.6;
}
.btn-danger-ghost:hover { background: rgba(248,113,113,0.12); opacity: 1; }

/* Refresh button spin animation */
.refresh-icon {
  width: 15px; height: 15px;
  transition: transform 0.3s ease;
}
.btn-refreshing .refresh-icon {
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn-sm  { padding: 6px 14px; font-size: 0.8rem; }
.btn-xs  { padding: 4px 10px; font-size: 0.75rem; border-radius: 6px; }

/* ── History Select ───────────────────────────────────────────── */
.history-select {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-sans); font-size: 0.875rem; font-weight: 500;
  padding: 10px 12px;
  cursor: pointer;
  transition: border-color var(--transition);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2394a3b8'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 16px;
  padding-right: 36px;
}
.history-select:hover  { border-color: rgba(255,255,255,0.2); }
.history-select:focus  { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(108,99,255,0.25); }
.history-select option { background: #1a1a2e; }

/* ── Status Bar ───────────────────────────────────────────────── */
.status-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: rgba(52,211,153,0.08);
  border: 1px solid rgba(52,211,153,0.2);
  border-radius: var(--radius-sm);
  font-size: 0.8rem; color: var(--color-success);
}
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}
.status-text { flex: 1; }

/* ── Inbox Section ────────────────────────────────────────────── */
.inbox-section { display: flex; flex-direction: column; gap: 12px; }
.inbox-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 4px;
}
.inbox-actions {
  display: flex; align-items: center; gap: 8px;
}
.inbox-title {
  font-size: 1.1rem; font-weight: 700;
  display: flex; align-items: center; gap: 10px;
}
.inbox-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 24px; height: 24px; padding: 0 7px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-end));
  border-radius: 999px;
  font-size: 0.7rem; font-weight: 700; color: #fff;
  transition: transform 0.2s;
}

/* ── Empty State ──────────────────────────────────────────────── */
.inbox-empty {
  display: flex; flex-direction: column; align-items: center;
  padding: 56px 24px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-xl);
  gap: 8px;
  text-align: center;
}
.empty-icon { font-size: 2.5rem; margin-bottom: 8px; }
.empty-title { font-size: 1rem; font-weight: 600; color: var(--color-text-muted); }
.empty-sub   { font-size: 0.85rem; color: var(--color-text-dim); max-width: 280px; }

/* ── Email List ───────────────────────────────────────────────── */
.email-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 8px;
}
.email-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 4px 12px;
  animation: item-in 0.3s ease both;
}
.email-item:hover {
  background: var(--color-surface-hover);
  border-color: rgba(255,255,255,0.15);
  transform: translateX(3px);
}
.email-item.unread { border-left: 3px solid var(--color-primary); }

@keyframes item-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.email-sender {
  font-size: 0.875rem; font-weight: 600;
  color: var(--color-text);
  truncate: ellipsis;
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
}
.email-time {
  font-size: 0.75rem; color: var(--color-text-dim);
  white-space: nowrap; grid-row: 1;
}
.email-subject {
  font-size: 0.82rem; color: var(--color-text-muted);
  overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
  grid-column: 1 / -1;
}

/* ── Email Detail ─────────────────────────────────────────────── */
.email-detail {
  padding: 28px;
  display: flex; flex-direction: column; gap: 20px;
  animation: item-in 0.25s ease both;
}
.detail-back { align-self: flex-start; margin-bottom: 4px; }
.detail-meta {
  display: flex; flex-direction: column; gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.detail-field { display: flex; flex-direction: column; gap: 2px; }
.detail-label {
  font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-text-dim);
}
.detail-value {
  font-size: 0.9rem; color: var(--color-text);
  word-break: break-all;
}
.detail-iframe {
  width: 100%;
  min-height: 500px;
  background: #ffffff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color-scheme: light;
}

/* ── Toast ────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: rgba(30, 30, 50, 0.95);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 24px;
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-text);
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  z-index: 1000;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  white-space: nowrap;
}
.toast.visible {
  opacity: 1; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.toast.success { border-color: rgba(52,211,153,0.4); color: var(--color-success); }
.toast.error   { border-color: rgba(248,113,113,0.4); color: var(--color-danger); }

/* ── Loading Skeleton ─────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 480px) {
  .address-card  { padding: 20px; }
  .header        { padding: 16px 0 4px; }
  .address-text  { font-size: 0.85rem; }
  .btn-primary   { flex: 1; justify-content: center; }
  .email-detail  { padding: 20px; }
  .inbox-empty   { padding: 40px 16px; }
}

/* ── Outline Button ────────────────────────────────────────────── */
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(108, 99, 255, 0.45);
}
.btn-outline:hover {
  background: rgba(108, 99, 255, 0.12);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}
.btn-outline:active { transform: translateY(0); }

/* ── Custom Email Input ────────────────────────────────────────── */
.address-controls {
  display: flex;
  flex-direction: column;
}

.custom-input-row {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  pointer-events: none;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.25s ease,
              margin-top 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  margin-top: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.custom-input-row.open {
  max-height: 80px;
  opacity: 1;
  pointer-events: auto;
  margin-top: 10px;
}

.custom-input-inner {
  display: flex;
  align-items: center;
  gap: 8px;
}

.custom-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.custom-input-wrap:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.25);
}
.custom-input-wrap.invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 2px rgba(248, 113, 113, 0.2);
}

.custom-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 0.875rem;
  padding: 9px 6px 9px 12px;
}
.custom-input::placeholder { color: var(--color-text-dim); }

.custom-domain {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-dim);
  padding: 9px 12px 9px 0;
  white-space: nowrap;
  user-select: none;
}

.custom-input-error {
  font-size: 0.78rem;
  color: var(--color-danger);
  min-height: 1em;
  padding-left: 2px;
  opacity: 0;
  transition: opacity var(--transition);
}
.custom-input-error:not(:empty) { opacity: 1; }