:root{
  --bg:#111;--bg2:#1a1a1a;--bg3:#222;--bg4:#2a2a2a;
  --border:#333;--border2:#444;
  --text:#e8e8e8;--text2:#999;--text3:#666;
  --accent:#7c6aef;--accent-soft:rgba(124,106,239,.12);--accent-glow:rgba(124,106,239,.3);
  --teal:#3ecfb4;--danger:#ef6a6a;--blue:#4d9bf5;
  --r:10px;--r-sm:6px;
  --ease:180ms ease;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box;margin:0}
html{-webkit-font-smoothing:antialiased}
body{font-family:'Inter',system-ui,sans-serif;color:var(--text);background:var(--bg);min-height:100dvh;overflow:hidden;line-height:1.5;font-size:14px}
[hidden]{display:none!important}

/* ═══ LANDING ═══ */
#landing{min-height:100dvh;overflow-y:auto;position:relative}
.grain{position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.03;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:180px}
.orb{position:fixed;border-radius:50%;pointer-events:none;z-index:0;filter:blur(100px)}
.orb-1{width:500px;height:500px;top:-150px;left:-100px;background:radial-gradient(circle,rgba(124,106,239,.1),transparent 70%)}
.orb-2{width:400px;height:400px;bottom:-80px;right:-60px;background:radial-gradient(circle,rgba(62,207,180,.07),transparent 70%)}
.land-topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 5vw;position:relative;z-index:1}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem}
.brand svg{color:var(--accent)}
.pill{font-size:.72rem;font-weight:500;padding:3px 10px;border-radius:100px;background:var(--bg3);border:1px solid var(--border);color:var(--text2)}
.hero{max-width:700px;margin:0 auto;padding:60px 5vw 30px;position:relative;z-index:1;animation:fadeUp .5s ease-out}
.eyebrow{display:flex;align-items:center;gap:8px;font-size:.72rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 8px var(--teal)}
h1{font-family:'Playfair Display',serif;font-size:clamp(2rem,5.5vw,3.8rem);font-weight:700;line-height:1.08;letter-spacing:-.02em;margin-top:14px;background:linear-gradient(135deg,#fff 30%,var(--text2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.lead{margin-top:14px;color:var(--text2);font-size:.95rem;line-height:1.7;max-width:48ch}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:18px}
.chip{font-size:.68rem;font-weight:500;padding:3px 10px;border-radius:100px;background:var(--bg3);border:1px solid var(--border);color:var(--text2)}
.login-card{max-width:380px;margin:0 auto;padding:28px;position:relative;z-index:1;background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);animation:fadeUp .6s ease-out}
.login-card h2{font-size:1.1rem;font-weight:600}
.sub{color:var(--text2);font-size:.85rem;margin-top:4px}
.stack{display:grid;gap:12px;margin-top:14px}
.field{display:grid;gap:4px}
.field label{font-size:.75rem;font-weight:500;color:var(--text2)}

/* ═══ INPUTS ═══ */
input,textarea,select{font:inherit;font-size:.88rem;padding:8px 12px;border-radius:var(--r-sm);border:1px solid var(--border);background:var(--bg);color:var(--text);transition:border-color var(--ease);width:100%}
input::placeholder,textarea::placeholder{color:var(--text3)}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}

/* ═══ BUTTONS ═══ */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-size:.85rem;font-weight:600;padding:9px 20px;border:none;border-radius:var(--r-sm);background:var(--accent);color:#fff;cursor:pointer;transition:box-shadow var(--ease),transform var(--ease)}
.btn-primary:hover{box-shadow:0 4px 16px var(--accent-glow);transform:translateY(-1px)}
.btn-sm{font:inherit;font-size:.85rem;font-weight:600;padding:7px 12px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg3);color:var(--text);cursor:pointer}
.btn-ghost-sm{font:inherit;font-size:.78rem;font-weight:500;padding:4px 10px;border:1px solid var(--border);border-radius:var(--r-sm);background:transparent;color:var(--text2);cursor:pointer;transition:color var(--ease)}
.btn-ghost-sm:hover{color:var(--text)}
.icon-btn{background:none;border:none;color:var(--text2);cursor:pointer;font-size:1.1rem;padding:6px 8px;border-radius:var(--r-sm);transition:background var(--ease),color var(--ease)}
.icon-btn:hover{background:var(--bg3);color:var(--text)}

/* ═══ APP LAYOUT ═══ */
#app{display:flex;flex-direction:column;height:100dvh}
.app-header{display:flex;justify-content:space-between;align-items:center;padding:0 16px;height:52px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0}
.app-header-left,.app-header-right{display:flex;align-items:center;gap:10px}
.app-body{display:flex;flex:1;overflow:hidden}

/* Sidebar */
.sidebar{width:240px;flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:12px;overflow-y:auto;transition:margin-left var(--ease),opacity var(--ease)}
.sidebar.collapsed{margin-left:-240px;opacity:0;pointer-events:none}
.compose-btn{width:100%;padding:12px;border:none;border-radius:var(--r);background:var(--accent);color:#fff;font:inherit;font-size:.88rem;font-weight:600;cursor:pointer;margin-bottom:16px;transition:box-shadow var(--ease)}
.compose-btn:hover{box-shadow:0 4px 16px var(--accent-glow)}
.sidebar-section{flex:1;display:flex;flex-direction:column;min-height:0}
.sidebar-section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.sidebar-section-head span{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text2)}
.mb-form{display:grid;grid-template-columns:1fr auto;gap:6px;margin-bottom:10px}
.mb-form input{font-size:.82rem;padding:6px 10px}
.gen-form{margin-bottom:14px}
.gen-label{display:block;font-size:.72rem;font-weight:500;color:var(--text2);margin-bottom:6px}
.gen-row{display:flex;flex-direction:column;gap:6px}
.gen-input-wrap{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden}
.gen-input-wrap input{border:none;border-radius:0;padding:7px 10px;flex:1;min-width:0;font-size:.85rem}
.gen-input-wrap input:focus{box-shadow:none}
.gen-domain{font-size:.78rem;color:var(--text3);padding-right:10px;white-space:nowrap;flex-shrink:0}
.btn-gen{width:100%;padding:8px;font-size:.82rem}
.gen-custom{margin-top:8px}
.gen-custom summary{font-size:.75rem;color:var(--text2);cursor:pointer;padding:4px 0}
.gen-custom summary:hover{color:var(--text)}
.gen-custom .gen-row{margin-top:6px;display:flex;flex-direction:column;gap:6px}
.mb-list{overflow-y:auto;display:grid;gap:2px;align-content:start}

/* Mailbox items */
.mb-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--r-sm);border:none;background:transparent;color:var(--text);font:inherit;font-size:.85rem;cursor:pointer;text-align:left;width:100%;transition:background var(--ease)}
.mb-item:hover{background:var(--bg3)}
.mb-item.active{background:var(--accent-soft);color:var(--accent)}
.mb-item .mb-icon{width:28px;height:28px;border-radius:50%;background:var(--bg4);display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:600;flex-shrink:0;text-transform:uppercase}
.mb-item.active .mb-icon{background:var(--accent);color:#fff}
.mb-item .mb-addr{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ═══ MAIN ═══ */
.main{flex:1;overflow:hidden;display:flex;flex-direction:column;background:var(--bg)}

/* List view */
.list-view{display:flex;flex-direction:column;height:100%}
.list-toolbar{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;border-bottom:1px solid var(--border);flex-shrink:0}
.list-toolbar h2{font-size:.95rem;font-weight:600}
.msg-list{flex:1;overflow-y:auto}

/* Message rows (Gmail-style) */
.msg-row{display:grid;grid-template-columns:180px 1fr auto;gap:12px;align-items:center;padding:10px 20px;border-bottom:1px solid rgba(255,255,255,.04);cursor:pointer;transition:background var(--ease)}
.msg-row:hover{background:var(--bg3)}
.msg-from{font-weight:500;font-size:.85rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.msg-preview{display:flex;gap:6px;overflow:hidden;min-width:0}
.msg-subject{font-weight:500;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex-shrink:0;max-width:260px}
.msg-snippet{color:var(--text2);font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.msg-date{font-size:.78rem;color:var(--text2);white-space:nowrap}
.msg-badge{display:inline-block;font-size:.65rem;font-weight:600;padding:1px 6px;border-radius:3px;margin-right:6px}
.msg-badge.in{background:rgba(62,207,180,.15);color:var(--teal)}
.msg-badge.out{background:rgba(77,155,245,.15);color:var(--blue)}
.msg-empty{padding:60px 20px;text-align:center;color:var(--text3);font-size:.9rem}
.scroll-sentinel{height:1px}

/* ═══ EMAIL VIEW ═══ */
.email-view{display:flex;flex-direction:column;height:100%;overflow-y:auto}
.ev-toolbar{display:flex;align-items:center;gap:12px;padding:10px 20px;border-bottom:1px solid var(--border);flex-shrink:0}
.ev-subject{font-size:1.1rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.btn-reply{padding:6px 16px;font-size:.8rem;white-space:nowrap;flex-shrink:0}
.ev-meta{display:flex;gap:12px;padding:16px 20px;align-items:flex-start}
.ev-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;flex-shrink:0;text-transform:uppercase}
.ev-meta-text{display:flex;flex-direction:column;gap:2px;min-width:0}
.ev-meta-text strong{font-size:.9rem}
.ev-to{font-size:.78rem;color:var(--text2)}
.ev-date{font-size:.75rem;color:var(--text3)}
.ev-body{padding:0 20px 40px 68px;line-height:1.65;font-size:.9rem}
/* sandboxed HTML email content */
.ev-body iframe.email-frame{width:100%;border:none;border-radius:var(--r-sm);background:#1a1a1a;min-height:200px}

/* ═══ COMPOSE PANEL ═══ */
.compose-panel{position:fixed;bottom:0;right:24px;width:480px;max-width:calc(100vw - 48px);background:var(--bg2);border:1px solid var(--border);border-bottom:none;border-radius:var(--r) var(--r) 0 0;box-shadow:0 -4px 30px rgba(0,0,0,.4);z-index:50;display:flex;flex-direction:column;max-height:70vh;transition:transform var(--ease)}
.compose-panel.minimized{max-height:0;overflow:hidden}
.compose-panel.minimized .cp-body{display:none}
.cp-header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:var(--bg3);border-radius:var(--r) var(--r) 0 0;cursor:pointer}
.cp-header span{font-size:.88rem;font-weight:600}
.cp-actions{display:flex;gap:2px}
.cp-body{display:flex;flex-direction:column;flex:1;overflow:hidden}
.cp-field{border:none;border-bottom:1px solid var(--border);border-radius:0;padding:8px 14px;font-size:.85rem;background:transparent}
.cp-field:focus{box-shadow:none;border-color:var(--accent)}
.cp-textarea{flex:1;border:none;border-radius:0;padding:12px 14px;resize:none;min-height:120px;font-size:.88rem;background:transparent}
.cp-textarea:focus{box-shadow:none}
.cp-footer{padding:10px 14px;border-top:1px solid var(--border);display:flex}
.btn-send{padding:8px 24px}

/* ═══ TOAST ═══ */
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(14px);padding:8px 18px;border-radius:var(--r-sm);background:var(--bg3);border:1px solid var(--border);color:var(--text);font-size:.84rem;font-weight:500;opacity:0;pointer-events:none;z-index:100;transition:opacity .25s,transform .25s}
.toast.visible{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.error{border-color:rgba(239,106,106,.3);color:var(--danger)}

/* ═══ RESPONSIVE ═══ */
/* Sidebar overlay on mobile */
.sidebar-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:19}
.sidebar-backdrop.visible{display:block}

@media(max-width:768px){
  body{font-size:15px}
  .app-header{padding:0 12px;height:48px}
  .brand span{display:none}

  /* Sidebar as overlay */
  .sidebar{position:fixed;top:48px;left:0;bottom:0;z-index:20;width:280px;box-shadow:4px 0 20px rgba(0,0,0,.4)}
  .sidebar.collapsed{margin-left:-280px}

  /* Message rows: stack vertically */
  .msg-row{grid-template-columns:1fr auto;gap:4px;padding:12px 16px}
  .msg-from{display:none}
  .msg-subject{max-width:none}
  .msg-preview{flex-wrap:wrap}

  /* Email view */
  .ev-toolbar{padding:10px 14px;gap:8px}
  .ev-subject{font-size:.95rem}
  .ev-meta{padding:12px 14px}
  .ev-body{padding:0 14px 30px 14px}
  .btn-reply{padding:6px 12px;font-size:.78rem}

  /* Compose: full-screen on mobile */
  .compose-panel{position:fixed;inset:0;width:100%;max-width:100%;max-height:100%;border-radius:0;border:none;z-index:60}
  .cp-textarea{min-height:160px}

  /* Landing */
  .hero{padding:40px 5vw 20px}
  h1{font-size:clamp(1.8rem,7vw,2.6rem)}
  .login-card{margin:0 5vw;max-width:none}

  /* Bigger touch targets */
  .icon-btn{padding:10px 12px;font-size:1.2rem}
  .mb-item{padding:12px}
  .btn-primary{padding:12px 20px}
  .btn-ghost-sm{padding:8px 12px}

  /* Toast above compose */
  .toast{bottom:auto;top:60px}
}

@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}