/* Shared component colors keep dark and light mode consistent. */
:root {
  --page: #f1f5f9;
  --reader: #ffffff;
  --sidebar: #f8fafc;
  --panel: #ffffff;
  --raised: #f1f5f9;
  --field: #f8fafc;
  --hover: #eef3fa;
  --selected: #e9f0fc;
  --border: #dce3ed;
  --text: #172033;
  --secondary: #42526b;
  --muted-text: #596b82;
  --accent: #305ab5;
  --link: #2457ae;
  --primary: #1e293b;
  --primary-text: #ffffff;
  --primary-hover: #334155;
  --code: #087d6e;
  --code-bg: #e4f7f1;
  --code-border: #b9e7db;
  --error-bg: #fff1f0;
  --error-border: #efc5c0;
  --error-text: #b03b36;
  --warning-bg: #fff7e2;
  --warning-text: #825f16;
  --status: #10a883;
  --ink: var(--text);
  --muted: var(--muted-text);
  --green: var(--accent);
  --dark: var(--sidebar);
  --lime: var(--selected);
  --line: var(--border);
  --paper: var(--panel);
  --soft: var(--page);
  --red: var(--error-text);
  color-scheme: light;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-synthesis: weight;
  background: var(--page);
  color: var(--text);
}

:root[data-theme="dark"] {
  --page: #060b17;
  --reader: #050b18;
  --sidebar: #10182a;
  --panel: #0d1526;
  --raised: #1a263a;
  --field: #151f30;
  --hover: #152135;
  --selected: #192840;
  --border: #263247;
  --text: #e7edf7;
  --secondary: #b8c5d8;
  --muted-text: #94a5be;
  --accent: #96b7ff;
  --link: #a2c1ff;
  --primary: #e2e8f0;
  --primary-text: #152033;
  --primary-hover: #ffffff;
  --code: #39d9be;
  --code-bg: #0a2b30;
  --code-border: #175953;
  --error-bg: #301c25;
  --error-border: #69404b;
  --error-text: #f2a6ad;
  --warning-bg: #312819;
  --warning-text: #e3c88f;
  --status: #37cda1;
  color-scheme: dark;
}

body, .inbox-page, .welcome, .mail-main, .admin-page {
  background: var(--page);
  color: var(--text);
}

button, input, textarea { font-family: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline-color: var(--accent);
}
input, textarea {
  color: var(--text);
  background: var(--field);
  border-color: var(--border);
  border-radius: 8px;
}
input::placeholder, textarea::placeholder { color: var(--muted-text); opacity: 1; }
.button { border-radius: 7px; font-size: 13px; font-weight: 600; }
.button.primary { background: var(--primary); color: var(--primary-text); }
.button.primary:hover { background: var(--primary-hover); }
.button.secondary { background: var(--raised); border-color: var(--border); color: var(--text); }
.button.secondary:hover { background: var(--hover); }
.icon-button, .password-toggle { color: var(--muted-text); }
.icon-button:hover { color: var(--text); background: var(--hover); }
.text-link { color: var(--link); }
.muted, .field-help, .password-note, .form-footer, .form-card>.muted,
.form-card>.eyebrow, .delivery-note { color: var(--muted-text); }
.form-icon { background: var(--raised); border-color: var(--border); color: var(--secondary); border-radius: 10px; }
.form-error, .error-banner { background: var(--error-bg); border-color: var(--error-border); color: var(--error-text); }
.form-divider { background: var(--border); }
.toast { background: var(--raised); border: 1px solid var(--border); color: var(--text); box-shadow: 0 10px 30px #0003; }
.status-dot { background: var(--status); }
.avatar { color: var(--secondary); background: var(--raised); }
[data-theme] .brand { color: var(--text); font-size: 25px; letter-spacing: -.8px; font-weight: 650; }
.brand-dot, .heading-dot { display: none; }
.eyebrow { letter-spacing: 1.2px; }

/* Inbox: navy navigation, slate list, and a quieter reading surface. */
.sidebar { width: 240px; background: var(--sidebar); color: var(--secondary); padding-top: 28px; border-right: 1px solid var(--border); }
.sidebar .brand { font-size: 24px; gap: 11px; }
.sidebar .brand>.icon { color: var(--secondary); }
.workspace-label { color: var(--muted-text); font-size: 10px; letter-spacing: 1px; margin-top: 38px; }
.sidebar .nav-item, .sidebar-bottom .nav-item { color: var(--secondary); font-size: 13px; }
.sidebar .nav-item:hover { background: var(--hover); color: var(--text); }
.sidebar .nav-item.active { background: var(--selected); color: var(--text); }
.count { background: var(--raised); color: var(--secondary); border-radius: 6px; font-size: 11px; }
.sidebar-bottom { margin-top: auto; }
.account { border-top-color: var(--border); }
.account strong { color: var(--text); max-width: 155px; font-size: 11px; }
.account span { color: var(--muted-text); font-size: 10px; }
.account-avatar { background: var(--raised); color: var(--secondary); }
.app-header { height: 96px; padding: 22px 32px; background: var(--panel); }
.app-header .eyebrow { color: var(--muted-text); font-size: 9px; letter-spacing: 1px; }
.app-header h1 { font-size: 27px; font-weight: 650; margin-top: 8px; letter-spacing: -.7px; }
.privacy-label { color: var(--muted-text); font-size: 12px; }
.mail-address-bar { height: 51px; padding: 0 32px; background: var(--panel); }
.address-label { color: var(--muted-text); font-size: 9px; }
.mail-address-bar strong { color: var(--secondary); font-size: 12px; }
.live-label { color: var(--muted-text); font-size: 10px; }
.message-panel { width: 390px; background: var(--panel); }
.list-heading { padding-top: 17px; }
.list-heading h2 { color: var(--text); font-size: 14px; }
.list-heading h2 span { color: var(--secondary); background: var(--raised); font-size: 10px; }
.search-wrap input { background: var(--field); border-color: var(--border); font-size: 13px; padding-top: 13px; padding-bottom: 13px; }
.search-wrap .icon { color: var(--muted-text); }
.list-status { color: var(--muted-text); font-size: 11px; }
.message-list, .reader-panel { scrollbar-color: var(--border) transparent; }
.message-row { background: var(--panel); border-bottom-color: var(--border); padding: 21px 22px; }
.message-row:hover { background: var(--hover); }
.message-row.active { background: var(--selected); }
.message-row.active:before { background: var(--accent); }
.row-top { gap: 10px; margin-bottom: 11px; }
.row-top .avatar { border-radius: 50%; width: 34px; height: 34px; font-size: 11px; }
.row-sender { color: var(--text); font-size: 14px; font-weight: 600; }
.row-subject { color: var(--secondary); font-size: 13px; font-weight: 550; }
.row-snippet { color: var(--muted-text); font-size: 13px; line-height: 1.65; }
.row-date { color: var(--muted-text); font-size: 11px; }
.row-code { color: var(--code); background: var(--code-bg); border-color: var(--code-border); letter-spacing: .6px; }
.list-footer { background: var(--panel); color: var(--muted-text); font-size: 9px; }
.list-empty { color: var(--muted-text); }
.list-empty strong { color: var(--secondary); }
.reader-panel { background: var(--reader); }
.reader-empty { padding: 28px; }
.empty-envelope { background: var(--raised); transform: none; border-radius: 12px; width: 68px; height: 68px; margin-bottom: 26px; }
.empty-envelope>.icon { color: var(--muted-text); width: 34px; height: 34px; stroke-width: 1.4; }
.empty-envelope>span { display: none; }
.reader-empty h2 { font-family: inherit; color: var(--secondary); font-size: 21px; font-weight: 550; letter-spacing: -.4px; }
.reader-empty p { color: var(--muted-text); font-size: 13px; }
.reader-empty .eyebrow, .reader-empty .small { color: var(--muted-text); font-size: 10px; }
.empty-rule { background: var(--border); }
.skeleton i { background: var(--raised); }
.reader-toolbar { color: var(--muted-text); height: 58px; }
.reader-toolbar>.text-link { color: var(--secondary); font-size: 12px; }
.reader-toolbar>span { font-size: 9px; }
.message-heading { padding-top: 28px; padding-bottom: 23px; }
.message-heading h2 { color: var(--text); font-size: 24px; font-weight: 600; letter-spacing: -.5px; }
.sender-info strong { color: var(--text); font-size: 13px; }
.sender-info>span, .sender-details>time, .to-line, .to-line>span { color: var(--muted-text); }
.message-body { color: var(--secondary); font-size: 14px; }
.message-body h3, .message-body strong { color: var(--text); }
.message-body a, .message-link>a { color: var(--link); }
.message-privacy { color: var(--muted-text); font-size: 11px; }
.message-loading { color: var(--muted-text); }
.code-banner { background: var(--code-bg); border-color: var(--code-border); }
.code-banner strong, .code-banner .eyebrow { color: var(--code); }
.code-banner .button { color: var(--code); background: transparent; border-color: var(--code-border); }
.code-banner .button:hover { background: var(--hover); }
.truncated-notice { background: var(--warning-bg); color: var(--warning-text); }
.message-body>pre { background: var(--raised); color: var(--secondary); }
.mail-list-item:before { color: var(--muted-text); }
.message-links { background: var(--panel); border-color: var(--border); }
.message-links>h3, .message-link strong { color: var(--secondary); }
.message-link+.message-link { border-color: var(--border); }
.message-end { color: var(--muted-text); }
.message-end span { background: var(--border); }

/* Sign-in uses the same surfaces, typography and controls as the reader. */
.welcome-story { background: var(--sidebar); border-right: 1px solid var(--border); padding-top: 40px; }
.welcome-form { background: var(--page); padding-left: 9%; padding-right: 9%; }
.story-copy { max-width: 520px; }
.story-copy h1 { font-family: inherit; color: var(--text); font-size: clamp(40px, 4vw, 58px); line-height: 1.1; font-weight: 650; letter-spacing: -2.2px; margin: 24px 0; }
.story-copy>.eyebrow, .story-copy>p, .story-footer { color: var(--muted-text); }
.story-copy>.eyebrow { font-size: 10px; }
.story-copy>p { font-size: 15px; max-width: 390px; }
.welcome-form .form-card { max-width: 420px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 32px; }
.form-card h2 { font-size: 27px; letter-spacing: -.8px; font-weight: 650; }
.form-card>.muted { color: var(--muted-text); font-size: 13px; }
.form-card>.eyebrow { color: var(--muted-text); }
.form-footer { max-width: 420px; font-size: 11px; }
.welcome-preview { max-width: 360px; margin-top: 36px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel); box-shadow: 0 12px 30px #0001; overflow: hidden; }
.welcome-preview-header { padding: 14px 17px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 9px; color: var(--secondary); font-size: 12px; font-weight: 600; }
.welcome-preview-header>.icon { width: 16px; height: 16px; }
.welcome-preview-header>span:last-child { margin-left: auto; color: var(--muted-text); font-size: 10px; font-weight: 400; }
.welcome-preview-row { display: flex; align-items: flex-start; gap: 12px; padding: 18px; }
.welcome-preview-row .avatar { width: 32px; height: 32px; font-size: 10px; }
.welcome-preview-row strong { color: var(--text); display: block; font-size: 12px; font-weight: 600; margin: 1px 0 6px; }
.welcome-preview-row p { color: var(--muted-text); font-size: 11px; line-height: 1.5; margin-bottom: 9px; }
.welcome-preview-code { display: inline-block; color: var(--code); background: var(--code-bg); border: 1px solid var(--code-border); font: 11px ui-monospace, monospace; letter-spacing: 1px; padding: 4px 7px; border-radius: 4px; }

/* Administration and account dialogs. */
.settings-dialog, .admin-card { background: var(--panel); color: var(--text); border-color: var(--border); }
.settings-dialog { border-radius: 12px; }
.settings-dialog::backdrop { background: #020617ad; }
.settings-dialog h2 { font-size: 25px; font-weight: 650; }
.admin-title h1, .admin-login h1 { font-size: 31px; font-weight: 650; letter-spacing: -1px; }
.admin-title .eyebrow, .generator-grid .admin-card>.eyebrow { color: var(--muted-text); }
.admin-card { border-radius: 10px; }
.admin-header { border-color: var(--border); }
.admin-card h2 { color: var(--text); font-weight: 600; }
.upload-button { background: var(--field); border-color: var(--border); color: var(--secondary); }
.upload-button:hover { border-color: var(--accent); }
.upload-button:has(+.file-input:focus-visible) { outline-color: var(--accent); }
.upload-button span, .results-header .eyebrow, .admin-mailbox span { color: var(--muted-text); }
.credentials-output { background: var(--field); color: var(--secondary); }
.created-link { background: var(--selected); border-color: var(--border); }
.skipped-results ul { color: var(--warning-text); }
.notice { color: var(--text); }

.theme-toggle { position: fixed; right: 20px; bottom: 20px; z-index: 90; display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 11px 15px; border: 1px solid var(--border); border-radius: 24px; background: var(--panel); color: var(--secondary); box-shadow: 0 4px 16px #0002; font-size: 11px; font-weight: 500; }
.theme-toggle:hover { background: var(--raised); color: var(--text); }
.theme-toggle .icon { width: 17px; height: 17px; }
.theme-sun { display: none; }
[data-theme=dark] .theme-sun { display: block; }
[data-theme=dark] .theme-moon { display: none; }

@media (min-width: 1600px) {
  .sidebar { width: 250px; }
  .message-panel { width: 420px; }
}
@media (max-width: 1150px) {
  .sidebar { width: 212px; padding-left: 12px; padding-right: 12px; }
  .sidebar .brand { font-size: 23px; }
  .account strong { max-width: 133px; }
  .message-panel { width: 335px; }
  .app-header, .mail-address-bar { padding-left: 24px; padding-right: 24px; }
  .welcome-form { padding-left: 7%; padding-right: 7%; }
  .welcome-form .form-card { padding: 27px; }
  .story-copy h1 { font-size: 44px; }
}
@media (max-width: 900px) and (min-width: 701px) {
  .sidebar { width: 76px; }
  .sidebar .brand { font-size: 0; }
  .sidebar .brand>.icon { width: 27px; height: 27px; }
  .sidebar .nav-item, .sidebar-bottom .nav-item { font-size: 0; }
  .message-panel { width: 310px; }
  .welcome-form { padding-left: 6%; padding-right: 6%; }
  .welcome-form .form-card { padding: 23px; }
  .form-card h2 { font-size: 24px; }
  .story-copy h1 { font-size: 39px; }
}
@media (max-width: 700px) {
  .app-header { height: 85px; padding: 19px 20px; }
  .app-header h1 { font-size: 26px; }
  .app-header .eyebrow { font-size: 8px; }
  .mail-address-bar { padding: 0 20px; }
  .mail-address-bar strong { font-size: 12px; }
  .live-label { font-size: 0; }
  .message-panel { width: 100%; }
  .row-sender { font-size: 14px; }
  .row-subject { font-size: 14px; }
  .row-snippet { font-size: 13px; }
  .row-date, .list-status { font-size: 11px; }
  .search-wrap input { font-size: 16px; }
  .list-footer { font-size: 10px; }
  .message-heading h2 { font-size: 23px; }
  .sender-info strong { font-size: 12px; }
  .reader-toolbar>.text-link { font-size: 12px; }
  .welcome-story { padding: 26px 24px 24px; border-right: 0; border-bottom: 1px solid var(--border); }
  .welcome-story .brand { font-size: 23px; }
  .story-copy { padding: 28px 0 0; }
  .story-copy h1 { font-size: 36px; letter-spacing: -1.3px; margin: 15px 0 12px; }
  .story-copy>p { font-size: 13px; max-width: 340px; }
  .story-copy>.eyebrow { font-size: 9px; }
  .welcome-preview { display: none; }
  .welcome-form { padding: 26px 20px; }
  .welcome-form .form-card { padding: 24px 21px; }
  .form-card h2 { font-size: 24px; }
  .form-footer { margin-top: 24px; padding: 0 3px; font-size: 10px; }
  .admin-title h1 { font-size: 29px; }
  .theme-toggle { right: 13px; bottom: 13px; width: 42px; min-height: 42px; padding: 11px; }
  .theme-label { display: none; }
}