/* ═══════════════════════════════════════════════════════════════════════════
   SufMail — style.css
   Premium dark glassmorphism design system
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Google Fonts already loaded in HTML ── */

/* ── Design Tokens ──────────────────────────────────────────────────────── */
:root {
  /* Colors */
  --bg-0:          #05050f;
  --bg-1:          #0a0a1f;
  --bg-2:          #0f0f2a;
  --glass:         rgba(255, 255, 255, 0.04);
  --glass-hover:   rgba(255, 255, 255, 0.07);
  --glass-border:  rgba(255, 255, 255, 0.09);
  --glass-border-h:rgba(255, 255, 255, 0.18);

  /* Accent palette */
  --purple-400:    #a78bfa;
  --purple-500:    #8b5cf6;
  --purple-600:    #7c3aed;
  --cyan-400:      #22d3ee;
  --cyan-500:      #06b6d4;
  --pink-400:      #f472b6;
  --pink-500:      #ec4899;
  --emerald-400:   #34d399;

  /* Gradient shorthands */
  --grad-primary:  linear-gradient(135deg, var(--purple-500), var(--cyan-500));
  --grad-glow:     linear-gradient(135deg, var(--purple-600) 0%, var(--pink-500) 50%, var(--cyan-500) 100%);

  /* Typography */
  --font-sans:     'Inter', system-ui, sans-serif;
  --font-display:  'Space Grotesk', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', monospace;

  /* Text */
  --text-0:        #f8f8ff;
  --text-1:        #c4c4d8;
  --text-2:        #7878a0;
  --text-3:        #4a4a6a;

  /* Spacing scale (multiples of 4px) */
  --space-1: 4px; --space-2: 8px; --space-3: 12px;
  --space-4: 16px; --space-5: 20px; --space-6: 24px;
  --space-8: 32px; --space-10: 40px; --space-12: 48px;
  --space-16: 64px; --space-20: 80px;

  /* Radii */
  --r-sm:  8px;
  --r-md:  14px;
  --r-lg:  20px;
  --r-xl:  28px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-sm:     0 2px 8px rgba(0,0,0,.4);
  --shadow-md:     0 8px 32px rgba(0,0,0,.5);
  --shadow-lg:     0 16px 64px rgba(0,0,0,.6);
  --shadow-glow:   0 0 40px rgba(139,92,246,.25), 0 0 80px rgba(6,182,212,.15);
  --shadow-glow-sm:0 0 16px rgba(139,92,246,.3);

  /* Timing */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.4, 0, 1, 1);
  --ease-back: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-0);
  color: var(--text-0);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Utility ─────────────────────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
.hidden { display: none !important; }

/* ── Animated Background ─────────────────────────────────────────────────── */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: var(--r-full);
  filter: blur(120px);
  opacity: 0.35;
  animation: orbFloat 20s ease-in-out infinite;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #6d28d9, transparent 70%);
  top: -200px; left: -200px;
  animation-duration: 22s;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #0e7490, transparent 70%);
  bottom: -150px; right: -100px;
  animation-duration: 18s;
  animation-delay: -7s;
}
.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #9d174d, transparent 70%);
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  animation-duration: 25s;
  animation-delay: -12s;
}

@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  33%       { transform: translateY(-40px) scale(1.05); }
  66%       { transform: translateY(20px) scale(0.97); }
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 100%);
}

/* ── Glass Card ──────────────────────────────────────────────────────────── */
.glass-card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: border-color .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.glass-card:hover {
  border-color: var(--glass-border-h);
  box-shadow: var(--shadow-md);
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.main {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  padding-bottom: var(--space-20);
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--glass-border);
  background: rgba(5, 5, 15, 0.7);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--text-0);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.logo-icon { font-size: 1.3rem; }
.logo-accent {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav-badge {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: .75rem;
  font-weight: 600;
  color: var(--emerald-400);
  background: rgba(52,211,153,.1);
  border: 1px solid rgba(52,211,153,.25);
  padding: 3px 10px;
  border-radius: var(--r-full);
  letter-spacing: .5px;
  text-transform: uppercase;
}
.pulse-dot {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--emerald-400);
  animation: pulseDot 1.5s ease-in-out infinite;
}
@keyframes pulseDot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .4; transform: scale(.7); }
}

.nav-link {
  color: var(--text-1);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav-link:hover { color: var(--text-0); }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px 20px;
  border-radius: var(--r-md);
  border: none;
  font-family: var(--font-sans);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s var(--ease-out);
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(139,92,246,.4);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(139,92,246,.55);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-1);
}
.btn-secondary:hover {
  background: var(--glass-hover);
  border-color: var(--glass-border-h);
  color: var(--text-0);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-1);
  padding: 8px 16px;
  font-size: .85rem;
}
.btn-ghost:hover {
  background: var(--glass);
  color: var(--text-0);
  border-color: var(--glass-border-h);
}

.btn-ghost-sm {
  background: transparent;
  border: none;
  color: var(--text-2);
  padding: 8px 10px;
  font-size: .82rem;
}
.btn-ghost-sm:hover { color: var(--text-1); }

.btn-sm {
  padding: 7px 14px;
  font-size: .82rem;
  border-radius: var(--r-sm);
  background: var(--grad-primary);
  color: #fff;
}
.btn-sm:hover { opacity: .9; }

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: var(--r-sm);
  border: none;
  background: var(--glass);
  color: var(--text-2);
  cursor: pointer;
  transition: all .2s;
}
.btn-icon:hover { background: var(--glass-hover); color: var(--text-0); }
.btn-icon.danger:hover { color: #f87171; background: rgba(239,68,68,.1); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding: var(--space-16) 0 var(--space-10);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: .8rem;
  font-weight: 600;
  color: var(--purple-400);
  background: rgba(139,92,246,.1);
  border: 1px solid rgba(139,92,246,.25);
  padding: 5px 14px;
  border-radius: var(--r-full);
  margin-bottom: var(--space-5);
  letter-spacing: .3px;
}
.badge-dot {
  display: block;
  width: 6px; height: 6px;
  background: var(--purple-400);
  border-radius: 50%;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--text-0);
  margin-bottom: var(--space-5);
}

.hero-gradient-text {
  background: var(--grad-glow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  max-width: 560px;
  margin: 0 auto;
  color: var(--text-1);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ── Address Card ────────────────────────────────────────────────────────── */
.address-section { margin-bottom: var(--space-6); }

.address-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-8);
  padding: var(--space-8);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  border-color: rgba(139,92,246,.2);
}

/* Timer ring */
.timer-wrap {
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 88px; height: 88px;
}
.timer-ring { position: absolute; inset: 0; transform: rotate(-90deg); }
.timer-track {
  fill: none;
  stroke: rgba(255,255,255,.06);
  stroke-width: 5;
}
.timer-fill {
  fill: none;
  stroke: url(#timerGrad);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-dasharray: 213.6;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear;
}
.timer-label {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}
.timer-value {
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 500;
  color: var(--cyan-400);
}
.timer-unit {
  font-size: .6rem;
  color: var(--text-3);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* SVG gradient def (injected inline so it's accessible) */
.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

.address-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Domain selector */
.domain-selector {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.domain-label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .5px;
  white-space: nowrap;
}
.domain-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.domain-pill {
  padding: 4px 12px;
  border-radius: var(--r-full);
  font-size: .78rem;
  font-weight: 600;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-2);
  cursor: pointer;
  transition: all .18s var(--ease-out);
  font-family: var(--font-mono);
  white-space: nowrap;
  user-select: none;
}
.domain-pill:hover {
  background: rgba(139,92,246,.12);
  border-color: rgba(139,92,246,.4);
  color: var(--purple-400);
}
.domain-pill.active {
  background: rgba(139,92,246,.18);
  border-color: rgba(139,92,246,.5);
  color: var(--purple-400);
  box-shadow: 0 0 12px rgba(139,92,246,.2);
}

/* Email display */
.email-display-wrap {
  position: relative;
}
.email-display {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.45rem);
  font-weight: 500;
  color: var(--text-0);
  background: rgba(0,0,0,.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  padding: var(--space-4) var(--space-5);
  word-break: break-all;
  letter-spacing: -.3px;
  transition: box-shadow .2s;
}
.email-display:hover { box-shadow: var(--shadow-glow-sm); }

.email-username { color: var(--cyan-400); }
.email-at       { color: var(--text-3); }
.email-domain-part { color: var(--purple-400); }

/* Custom username */
.input-group {
  display: flex;
  gap: var(--space-2);
}
.input-field {
  flex: 1;
  background: rgba(0,0,0,.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-sm);
  color: var(--text-0);
  font-family: var(--font-mono);
  font-size: .88rem;
  padding: 9px 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.input-field::placeholder { color: var(--text-3); }
.input-field:focus {
  border-color: rgba(139,92,246,.5);
  box-shadow: 0 0 0 3px rgba(139,92,246,.12);
}

/* Address action buttons */
.address-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.btn-copy.copied {
  background: linear-gradient(135deg, var(--emerald-400), #059669);
  box-shadow: 0 4px 20px rgba(52,211,153,.4);
}

@keyframes spinOnce {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.spin { animation: spinOnce .5s var(--ease-out) forwards; }

/* ── Inbox Layout ────────────────────────────────────────────────────────── */
.inbox-section { margin-bottom: var(--space-16); }

.inbox-layout {
  display: grid;
  grid-template-columns: minmax(320px,2fr) minmax(0,3fr);
  gap: var(--space-4);
  align-items: start;
}

/* Inbox panel */
.inbox-panel {
  display: flex;
  flex-direction: column;
  max-height: 680px;
  overflow: hidden;
}

.inbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.inbox-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-0);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.unread-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--r-full);
  background: var(--grad-primary);
  font-size: .7rem;
  font-weight: 700;
  color: #fff;
  animation: badgePop .25s var(--ease-back);
}
@keyframes badgePop {
  0% { transform: scale(0.4); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.inbox-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.last-updated {
  font-size: .73rem;
  color: var(--text-3);
  white-space: nowrap;
}

/* Email list */
.email-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.08) transparent;
}
.email-list::-webkit-scrollbar { width: 4px; }
.email-list::-webkit-scrollbar-track { background: transparent; }
.email-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 2px; }

/* Empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
  text-align: center;
}
.empty-icon { color: var(--text-3); margin-bottom: var(--space-2); }
.empty-title {
  font-weight: 600;
  color: var(--text-2);
  font-size: 1rem;
}
.empty-sub {
  color: var(--text-3);
  font-size: .83rem;
  line-height: 1.6;
}
.waiting-dots {
  display: flex;
  gap: 6px;
  margin-top: var(--space-3);
}
.waiting-dots span {
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--purple-500);
  animation: dotBounce 1.4s ease-in-out infinite;
}
.waiting-dots span:nth-child(2) { animation-delay: .2s; }
.waiting-dots span:nth-child(3) { animation-delay: .4s; }
@keyframes dotBounce {
  0%,80%,100% { transform: translateY(0); opacity: .5; }
  40%          { transform: translateY(-8px); opacity: 1; }
}

/* Email list item */
.email-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  border-bottom: 1px solid rgba(255,255,255,.04);
  transition: background .18s;
  position: relative;
  animation: slideInEmail .3s var(--ease-out) both;
}
@keyframes slideInEmail {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.email-item:hover { background: var(--glass-hover); }
.email-item.active { background: rgba(139,92,246,.08); }
.email-item.unread .email-item-from { color: var(--text-0); font-weight: 700; }
.email-item.unread .email-item-subject { color: var(--text-0); }

.email-item-avatar {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-primary);
  font-family: var(--font-display);
  position: relative;
}
.email-item.unread .email-item-avatar::after {
  content: '';
  position: absolute;
  top: 1px; right: 1px;
  width: 9px; height: 9px;
  background: var(--purple-400);
  border-radius: 50%;
  border: 2px solid var(--bg-0);
}

.email-item-body { flex: 1; min-width: 0; }
.email-item-row  {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
}
.email-item-from {
  font-size: .88rem;
  font-weight: 500;
  color: var(--text-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}
.email-item-time {
  font-size: .72rem;
  color: var(--text-3);
  white-space: nowrap;
  flex-shrink: 0;
}
.email-item-subject {
  font-size: .83rem;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}
.email-item-preview {
  font-size: .77rem;
  color: var(--text-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}

/* ── Viewer Panel ────────────────────────────────────────────────────────── */
.viewer-panel {
  display: flex;
  flex-direction: column;
  min-height: 500px;
  max-height: 680px;
  overflow: hidden;
  transition: opacity .25s;
}

.viewer-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  flex: 1;
  color: var(--text-3);
  text-align: center;
  padding: var(--space-10);
  height: 100%;
}
.placeholder-icon { opacity: .4; }
.placeholder-text { font-size: .9rem; line-height: 1.6; }

.viewer-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  animation: fadeIn .25s var(--ease-out);
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}
.viewer-actions { display: flex; gap: var(--space-2); }

.viewer-meta {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.viewer-subject {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-0);
  margin-bottom: var(--space-4);
  line-height: 1.4;
}

.viewer-from {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.from-avatar {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-display);
}
.from-details {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.from-name {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-0);
}
.from-email {
  font-size: .78rem;
  color: var(--text-2);
  font-family: var(--font-mono);
}
.viewer-date {
  font-size: .75rem;
  color: var(--text-3);
  white-space: nowrap;
  flex-shrink: 0;
}

.viewer-body {
  flex: 1;
  padding: var(--space-6);
  overflow-y: auto;
  color: var(--text-1);
  font-size: .92rem;
  line-height: 1.75;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.08) transparent;
}
.viewer-body::-webkit-scrollbar { width: 4px; }
.viewer-body::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 2px; }

/* HTML email iframe */
.email-iframe {
  width: 100%;
  border: none;
  min-height: 300px;
  background: #fff;
  border-radius: var(--r-sm);
}

/* Plain text email */
.plain-text {
  font-family: var(--font-mono);
  font-size: .83rem;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-1);
  background: rgba(0,0,0,.2);
  padding: var(--space-5);
  border-radius: var(--r-sm);
  border: 1px solid var(--glass-border);
}

/* ── How It Works ────────────────────────────────────────────────────────── */
.how-section {
  padding: var(--space-10) 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-0);
  text-align: center;
  margin-bottom: var(--space-8);
  letter-spacing: -.5px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.step-card {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out);
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-sm), var(--shadow-md);
}

.step-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.step-icon { font-size: 1.8rem; }
.step-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-0);
}
.step-desc {
  font-size: .85rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--glass-border);
  background: rgba(5,5,15,.6);
  padding: var(--space-8) var(--space-6);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-0);
}
.footer-text { font-size: .85rem; color: var(--text-2); }
.footer-link { color: var(--purple-400); text-decoration: none; }
.footer-link:hover { text-decoration: underline; }
.footer-disclaimer { font-size: .75rem; color: var(--text-3); }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: rgba(20,20,40,.95);
  border: 1px solid var(--glass-border-h);
  color: var(--text-0);
  font-size: .88rem;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--r-full);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  opacity: 0;
  pointer-events: none;
  z-index: 9999;
  transition: opacity .25s var(--ease-out), transform .25s var(--ease-out);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .inbox-layout {
    grid-template-columns: 1fr;
  }
  .viewer-panel {
    max-height: 500px;
  }
  .address-card {
    flex-direction: column;
    align-items: center;
    gap: var(--space-5);
    padding: var(--space-6);
  }
  .timer-wrap {
    align-self: center;
  }
}

@media (max-width: 600px) {
  .header-nav .nav-link { display: none; }
  .hero { padding: var(--space-10) 0 var(--space-8); }
  .hero-title { font-size: 2rem; }
  .address-actions { gap: var(--space-2); }
  .btn-primary { padding: 9px 14px; font-size: .85rem; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .steps-grid { grid-template-columns: 1fr; }
  .domain-pills { gap: var(--space-1); }
}