/* ══════════════════════════════════════════════════════════════════════
   MAILFORGE — Premium UI  |  Dark Industrial Luxury
   Fonts: Syne (geometric) + Instrument Serif (editorial)
   ══════════════════════════════════════════════════════════════════════ */

/* 1. Design Tokens */
:root {
  --bg:    #06060a;
  --bg-1:  #0b0b10;
  --bg-2:  #101017;
  --bg-3:  #16161f;
  --bg-4:  #1c1c28;
  --line:        rgba(255,255,255,0.055);
  --line-md:     rgba(255,255,255,0.09);
  --line-bright: rgba(255,255,255,0.16);
  --gold:       #D4A843;
  --gold-light: #EEC86A;
  --gold-dim:   rgba(212,168,67,0.14);
  --gold-ultra: rgba(212,168,67,0.06);
  --t1: #EDE8DF;
  --t2: #7B7688;
  --t3: #3E3B4A;
  --red:      #E05252;
  --red-dim:  rgba(224,82,82,0.12);
  --green:    #4ADE80;
  --sidebar-w: 232px;
  --radius:    10px;
  --radius-lg: 14px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:  cubic-bezier(0.7, 0, 1, 1);
}

/* 2. Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-font-smoothing: antialiased; }
body { font-family: 'Syne', sans-serif; background: var(--bg); color: var(--t1); min-height: 100vh; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
code {
  font-family: 'Courier New', monospace;
  font-size: 0.82em;
  background: var(--bg-3);
  color: var(--gold-light);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  border: 1px solid var(--line);
}

/* 3. Atmosphere */
.noise-overlay {
  position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

.gradient-mesh { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }

.mesh-orb { position: absolute; border-radius: 50%; filter: blur(90px); }

.mesh-orb--1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(212,168,67,0.16) 0%, transparent 70%);
  top: -150px; right: -80px;
  animation: orbDrift 22s ease-in-out infinite;
}

.mesh-orb--2 {
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(100,60,180,0.07) 0%, transparent 70%);
  bottom: 8%; left: 3%;
  animation: orbDrift 28s ease-in-out infinite reverse;
}

.mesh-orb--3 {
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(212,168,67,0.06) 0%, transparent 70%);
  top: 45%; left: 45%;
  animation: orbDrift 18s ease-in-out infinite;
  animation-delay: -9s;
}

@keyframes orbDrift {
  0%,100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(28px,-18px) scale(1.04); }
  66%      { transform: translate(-12px,22px) scale(0.96); }
}

/* 4. App Shell */
.app-shell { display: flex; min-height: 100vh; position: relative; z-index: 1; }

/* 5. Sidebar */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-1);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 20px 12px 16px;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
}

.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px; margin-bottom: 4px; }
.brand-mark { flex-shrink: 0; display: flex; align-items: center; }
.brand-mark svg { display: block; filter: drop-shadow(0 0 8px rgba(212,168,67,0.22)); }
.brand-words { display: flex; flex-direction: column; gap: 3px; line-height: 1; }
.brand-name { font-size: 0.95rem; font-weight: 700; color: var(--t1); letter-spacing: -0.01em; }
.brand-sub { font-size: 0.67rem; font-weight: 500; color: var(--t3); letter-spacing: 0.04em; text-transform: uppercase; }
.sidebar-divider { height: 1px; background: var(--line); margin: 14px 8px; }

/* 6. Navigation */
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.nav-section-label {
  font-size: 0.67rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--t3); padding: 0 10px;
  margin-bottom: 6px; display: block;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 9px 10px;
  border-radius: var(--radius);
  color: var(--t2); font-size: 0.875rem; font-weight: 500;
  letter-spacing: -0.01em;
  transition: background 0.15s, color 0.15s;
  position: relative; text-align: left;
}

.nav-item::before {
  content: ''; position: absolute;
  left: 0; top: 50%; transform: translateY(-50%) scaleY(0);
  width: 3px; height: 60%;
  background: var(--gold);
  border-radius: 0 3px 3px 0;
  transition: transform 0.2s var(--ease-out);
}

.nav-item:hover { background: var(--bg-3); color: var(--t1); }

.nav-item.active { background: var(--gold-dim); color: var(--gold-light); }
.nav-item.active::before { transform: translateY(-50%) scaleY(1); }

.nav-icon { display: flex; align-items: center; justify-content: center; width: 18px; font-size: 0.8rem; flex-shrink: 0; }
.nav-label { flex: 1; }

.nav-badge {
  font-size: 0.6rem; font-weight: 700; letter-spacing: 0.08em;
  background: var(--gold-dim); color: var(--gold);
  border: 1px solid rgba(212,168,67,0.3);
  padding: 1px 6px; border-radius: 20px;
}

.sidebar-spacer { flex: 1; }

.sidebar-footer {
  padding: 10px 10px 4px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
}

/* 7. API Status */
.api-status { display: flex; align-items: center; gap: 6px; }

.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--t3); transition: background 0.4s; flex-shrink: 0;
}

.api-status.online  .status-dot { background: var(--green); box-shadow: 0 0 6px var(--green); animation: blink 2.5s ease-in-out infinite; }
.api-status.offline .status-dot { background: var(--red); }
.api-status.checking .status-dot { background: var(--gold); animation: blink 1s ease-in-out infinite; }

@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0.4; } }

.status-label { font-size: 0.72rem; color: var(--t2); font-weight: 500; }
.version-tag  { font-size: 0.68rem; color: var(--t3); font-weight: 600; letter-spacing: 0.04em; }

/* 8. Page Viewport */
.page-viewport { flex: 1; margin-left: var(--sidebar-w); min-height: 100vh; position: relative; overflow-x: hidden; }

/* 9. Page System + Transitions */
.page {
  display: none;
  padding: 48px 52px 80px;
  max-width: 1100px;
  opacity: 0;
  will-change: opacity, transform;
}

.page.page-active {
  display: block;
  animation: pageIn 0.35s var(--ease-out) forwards;
}

.page.page-exit {
  display: block;
  animation: pageOut 0.2s var(--ease-in) forwards;
}

@keyframes pageIn  { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:translateY(0); } }
@keyframes pageOut { from { opacity:1; transform:translateY(0); }    to { opacity:0; transform:translateY(-8px); } }

.page.page-active .stagger-child { animation: cardRise 0.4s var(--ease-out) both; }
.page.page-active .stagger-child:nth-child(1) { animation-delay: 0.04s; }
.page.page-active .stagger-child:nth-child(2) { animation-delay: 0.09s; }
.page.page-active .stagger-child:nth-child(3) { animation-delay: 0.14s; }
.page.page-active .stagger-child:nth-child(4) { animation-delay: 0.18s; }

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

/* 10. Page Headers */
.page-hero { margin-bottom: 36px; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.73rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 18px; padding: 5px 12px;
  background: var(--gold-ultra); border: 1px solid rgba(212,168,67,0.2); border-radius: 20px;
}

.eyebrow-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); animation: blink 2s ease-in-out infinite; }

.hero-title {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  font-weight: 800; line-height: 1.1; letter-spacing: -0.03em;
  color: var(--t1); margin-bottom: 14px;
}

.hero-title em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400;
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 60%, #A87228 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero-subtitle { font-size: 0.93rem; color: var(--t2); line-height: 1.65; max-width: 520px; }

.page-header { margin-bottom: 28px; }
.page-title { font-size: 1.55rem; font-weight: 700; letter-spacing: -0.03em; color: var(--t1); margin-bottom: 6px; }
.page-desc  { font-size: 0.88rem; color: var(--t2); }

/* 11. Forge Cards */
.forge-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden; margin-bottom: 16px;
  transition: border-color 0.2s;
}

.forge-card:hover { border-color: var(--line-md); }

.forge-card--primary {
  border-color: var(--line-md);
  background: var(--bg-2);
  position: relative;
}

.forge-card--primary::before {
  content: ''; position: absolute; inset: -1px; border-radius: var(--radius-lg); padding: 1px;
  background: linear-gradient(135deg, rgba(212,168,67,0.3), transparent 50%, rgba(212,168,67,0.08));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}

.forge-card__header {
  display: flex; align-items: center; gap: 8px;
  padding: 13px 20px; border-bottom: 1px solid var(--line);
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.01em;
  color: var(--t2); background: rgba(255,255,255,0.012);
}

.forge-card__header i { color: var(--gold); font-size: 0.78rem; }
.forge-card__body { padding: 20px; }

.header-badge {
  margin-left: auto; font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  background: var(--bg-3); color: var(--t3); border: 1px solid var(--line);
  padding: 2px 8px; border-radius: 20px;
}

/* 12. Input System */
.field-label {
  display: flex; align-items: center; gap: 7px;
  font-size: 0.77rem; font-weight: 600; letter-spacing: 0.02em;
  color: var(--t2); margin-bottom: 10px;
}

.field-label i { color: var(--gold); font-size: 0.73rem; }

.input-row { display: flex; gap: 10px; }

.url-input {
  flex: 1; height: 46px;
  background: var(--bg); border: 1px solid var(--line-md); border-radius: var(--radius);
  padding: 0 16px; font-size: 0.875rem; color: var(--t1); outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.url-input::placeholder { color: var(--t3); }

.url-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.1), 0 0 20px rgba(212,168,67,0.05);
}

.field-input {
  width: 100%; background: var(--bg); border: 1px solid var(--line-md);
  border-radius: var(--radius); padding: 11px 14px;
  font-size: 0.875rem; color: var(--t1); outline: none; resize: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field-input::placeholder { color: var(--t3); }

.field-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.09);
}

.field-textarea { resize: vertical; min-height: 72px; }
.field-hint { font-size: 0.72rem; font-weight: 400; color: var(--t3); margin-left: 6px; }
.card-hint { font-size: 0.8rem; color: var(--t3); margin-bottom: 16px; line-height: 1.55; }

/* 13. Buttons */
.btn-forge {
  position: relative; height: 46px; padding: 0 22px;
  background: linear-gradient(135deg, var(--gold) 0%, #A87228 100%);
  border-radius: var(--radius); color: #0a0800;
  font-family: 'Syne', sans-serif; font-size: 0.85rem; font-weight: 700;
  white-space: nowrap; overflow: hidden;
  transition: transform 0.15s, box-shadow 0.2s, filter 0.2s;
  display: inline-flex; align-items: center; cursor: pointer;
}

.btn-forge:hover {
  transform: translateY(-1px); filter: brightness(1.1);
  box-shadow: 0 6px 24px rgba(212,168,67,0.28), 0 0 0 1px rgba(212,168,67,0.2);
}

.btn-forge:active { transform: translateY(0) scale(0.98); filter: brightness(0.95); box-shadow: none; }
.btn-forge:disabled { opacity: 0.5; cursor: not-allowed; transform: none; filter: none; box-shadow: none; }

.btn-forge__text { position: relative; z-index: 1; display: flex; align-items: center; gap: 8px; }

.btn-forge__shimmer {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,0.32) 50%, transparent 65%);
  transform: translateX(-100%); transition: transform 0s;
}

.btn-forge:hover .btn-forge__shimmer { transform: translateX(100%); transition: transform 0.5s ease; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  height: 30px; padding: 0 12px; border-radius: 7px;
  font-size: 0.78rem; font-weight: 600; color: var(--t2);
  border: 1px solid var(--line);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-ghost:hover { background: var(--bg-3); color: var(--t1); border-color: var(--line-md); }
.btn-ghost:active { transform: scale(0.97); }

.btn-ghost--accent { color: var(--gold); border-color: rgba(212,168,67,0.25); }
.btn-ghost--accent:hover { background: var(--gold-dim); color: var(--gold-light); border-color: rgba(212,168,67,0.4); }

/* 14. Progress */
.progress-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }

.progress-spinner {
  width: 16px; height: 16px; border: 2px solid var(--line-md);
  border-top-color: var(--gold); border-radius: 50%;
  animation: spin 0.7s linear infinite; flex-shrink: 0;
}

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

.progress-label { font-size: 0.82rem; color: var(--t2); font-weight: 500; }

.progress-track { height: 4px; background: var(--bg-3); border-radius: 2px; overflow: hidden; margin-bottom: 10px; }

.progress-fill {
  height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, #A87228, var(--gold), var(--gold-light), var(--gold), #A87228);
  background-size: 300% 100%;
  transition: width 0.5s var(--ease-out);
  animation: shimmerBar 2s linear infinite;
}

@keyframes shimmerBar { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

.progress-steps { display: flex; justify-content: space-between; font-size: 0.68rem; color: var(--t3); font-weight: 500; }

/* 15. Error */
.forge-error {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 18px; margin-bottom: 16px;
  background: var(--red-dim); border: 1px solid rgba(224,82,82,0.2);
  border-radius: var(--radius); font-size: 0.85rem; color: #F4A0A0; line-height: 1.5;
}

.forge-error i { color: var(--red); margin-top: 1px; flex-shrink: 0; }

/* 16. Results Grid */
.results-grid { display: grid; grid-template-columns: 300px 1fr; gap: 16px; align-items: start; }
.results-meta, .results-email { margin-bottom: 0; }

.meta-field { display: flex; flex-direction: column; gap: 5px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.meta-field:last-child { border-bottom: none; padding-bottom: 0; }
.meta-field:first-child { padding-top: 0; }
.meta-key { font-size: 0.67rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(--gold); }
.meta-value { font-size: 0.875rem; color: var(--t1); font-weight: 500; }
.meta-desc { font-size: 0.8rem; color: var(--t2); line-height: 1.55; max-height: 100px; overflow-y: auto; }
.divider { height: 1px; background: var(--line); margin: 4px 0; }

/* 17. Skills & Links */
.skills-wrap { display: flex; flex-wrap: wrap; gap: 5px; }

.skill-pill {
  font-size: 0.72rem; font-weight: 600; padding: 3px 10px; border-radius: 20px;
  background: var(--gold-dim); color: var(--gold-light);
  border: 1px solid rgba(212,168,67,0.2); letter-spacing: 0.01em;
}

.links-wrap { display: flex; flex-direction: column; gap: 5px; }
.links-wrap a { font-size: 0.78rem; color: var(--gold); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color 0.15s; }
.links-wrap a:hover { color: var(--gold-light); text-decoration: underline; }

/* 18. Email Display */
.card-actions { margin-left: auto; display: flex; gap: 6px; }
.email-body-wrap { max-height: 460px; overflow-y: auto; }

.email-body {
  font-family: 'Syne', sans-serif; font-size: 0.82rem; line-height: 1.8;
  color: var(--t1); white-space: pre-wrap; word-break: break-word;
  padding: 20px; background: transparent; margin: 0;
}

/* 19. Settings */
.settings-layout { display: flex; flex-direction: column; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field-group { display: flex; flex-direction: column; gap: 8px; }
.field-group--full { grid-column: 1 / -1; }
.settings-actions { display: flex; align-items: center; gap: 14px; padding: 20px 0 0; }
.settings-note { font-size: 0.75rem; color: var(--t3); }

/* 20. Help */
.help-layout { display: flex; flex-direction: column; }
.steps { display: flex; flex-direction: column; }

.step { display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: none; }

.step-num {
  font-size: 1.5rem; font-weight: 800; color: var(--bg-4);
  letter-spacing: -0.04em; flex-shrink: 0; line-height: 1; padding-top: 2px; min-width: 36px;
}

.step:hover .step-num { color: var(--gold-dim); transition: color 0.2s; }

.step-title { font-size: 0.875rem; font-weight: 700; color: var(--t1); margin-bottom: 5px; letter-spacing: -0.01em; }
.step-desc  { font-size: 0.82rem; color: var(--t2); line-height: 1.6; }

.prereq-list, .trouble-list { display: flex; flex-direction: column; }

.prereq-item { display: flex; align-items: flex-start; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 0.85rem; color: var(--t1); line-height: 1.55; }
.prereq-item:last-child { border-bottom: none; }
.prereq-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.help-link { font-size: 0.8rem; color: var(--gold); transition: color 0.15s; }
.help-link:hover { color: var(--gold-light); }

.code-block { display: inline-block; margin-top: 4px; }

.trouble-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 0.82rem; align-items: start; }
.trouble-row:last-child { border-bottom: none; }
.trouble-problem { color: #F4A0A0; font-weight: 600; }
.trouble-fix { color: var(--t2); }

/* 21. Toast */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  background: var(--bg-3); border: 1px solid var(--line-md);
  color: var(--t1); font-size: 0.82rem; font-weight: 500;
  padding: 11px 18px; border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: toastIn 0.3s var(--ease-out) forwards;
}

.toast.toast-exit { animation: toastOut 0.25s var(--ease-in) forwards; }

@keyframes toastIn  { from { opacity:0; transform:translateY(10px) scale(0.96); } to { opacity:1; transform:translateY(0) scale(1); } }
@keyframes toastOut { from { opacity:1; transform:translateY(0); }               to { opacity:0; transform:translateY(6px); } }

/* 22. Utilities */
.d-none { display: none !important; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--line-bright); }
::selection { background: rgba(212,168,67,0.22); color: var(--t1); }

/* 23. Responsive */
@media (max-width: 1024px) {
  .results-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 56px; }
  .brand-words, .nav-label, .nav-badge, .nav-section-label,
  .status-label, .version-tag, .brand-sub { display: none; }
  .sidebar { padding: 16px 8px; }
  .sidebar-brand { padding: 4px; justify-content: center; }
  .nav-item { justify-content: center; padding: 10px; }
  .nav-item::before { display: none; }
  .sidebar-footer { justify-content: center; }
  .page { padding: 28px 20px 60px; }
  .input-row { flex-direction: column; }
  .field-grid { grid-template-columns: 1fr; }
  .field-group--full { grid-column: 1; }
  .trouble-row { grid-template-columns: 1fr; gap: 4px; }
}