:root {
    --ink: #172033;
    --muted: #687386;
    --line: #dce2eb;
    --soft: #f5f7fb;
    --surface: #ffffff;
    --primary: #5b43d6;
    --primary-dark: #4630b8;
    --primary-soft: #eeeafe;
    --green: #16845b;
    --green-soft: #e6f7f0;
    --amber: #9b6910;
    --amber-soft: #fff3d8;
    --red: #b33a4a;
    --red-soft: #fdebed;
    --shadow: 0 18px 55px rgba(24, 32, 51, .09);
    --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: linear-gradient(180deg, #fafbff 0, #f6f8fc 420px, #f4f6fa 100%);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.55;
}
button, input, select, textarea { font: inherit; }
a { color: inherit; }
.container { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.page-shell { min-height: calc(100vh - 150px); padding: 42px 0 70px; }
.site-header { background: rgba(255,255,255,.86); border-bottom: 1px solid rgba(220,226,235,.8); backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 30; }
.header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 20px; font-weight: 800; letter-spacing: -.03em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: white; background: var(--primary); border-radius: 10px; font-size: 17px; }
.site-footer { padding: 28px 0 36px; color: var(--muted); text-align: center; font-size: 13px; }

h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.04; letter-spacing: -.045em; margin-bottom: 18px; }
h2 { font-size: 24px; line-height: 1.2; letter-spacing: -.025em; margin-bottom: 8px; }
code { padding: 2px 6px; border-radius: 6px; background: #edf0f6; }
.eyebrow { display: block; margin-bottom: 8px; color: var(--primary); font-weight: 800; text-transform: uppercase; letter-spacing: .11em; font-size: 12px; }
.muted, .field small { color: var(--muted); }

.card { background: var(--surface); border: 1px solid rgba(220,226,235,.95); border-radius: var(--radius); box-shadow: var(--shadow); }
.narrow-card { max-width: 700px; margin-inline: auto; padding: 36px; }
.hero { display: grid; grid-template-columns: 1.6fr .8fr; gap: 50px; align-items: end; margin-bottom: 34px; }
.hero p { max-width: 670px; color: var(--muted); font-size: 20px; }
.hero-badge { padding: 24px; border-radius: var(--radius); background: var(--primary-soft); color: var(--primary-dark); display: flex; flex-direction: column; gap: 5px; }
.hero-badge strong { font-size: 18px; }
.hero-badge span { color: #5f55a0; font-size: 14px; }

.button { appearance: none; border: 0; border-radius: 12px; background: var(--primary); color: white; min-height: 44px; padding: 10px 17px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; font-weight: 750; cursor: pointer; transition: transform .15s ease, background .15s ease, box-shadow .15s ease; }
.button:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 22px rgba(91,67,214,.22); }
.button-secondary { background: var(--primary-soft); color: var(--primary-dark); }
.button-secondary:hover { background: #e3defd; box-shadow: none; }
.button-ghost { background: transparent; color: var(--primary); border: 1px solid var(--line); }
.button-ghost:hover { background: var(--primary-soft); box-shadow: none; }
.button-small { min-height: 36px; padding: 7px 12px; font-size: 14px; border-radius: 10px; }
.button-large { min-height: 52px; padding-inline: 24px; }
.button-danger { background: var(--red); }
.button-danger:hover { background: #952b3a; }
.button.copied { background: var(--green); }
.icon-button { width: 40px; height: 40px; border: 0; background: #eef1f6; color: var(--muted); border-radius: 10px; cursor: pointer; font-size: 24px; line-height: 1; }
.icon-button:hover { background: var(--red-soft); color: var(--red); }
.icon-button:disabled { opacity: .35; cursor: not-allowed; }
.text-button { border: 0; background: transparent; padding: 4px; cursor: pointer; font-weight: 700; }
.danger-text { color: var(--red); }

.form-card { padding: 38px; }
.section-heading { display: flex; gap: 15px; align-items: flex-start; margin: 6px 0 24px; padding-top: 30px; border-top: 1px solid var(--line); }
.section-heading:first-of-type { border-top: 0; padding-top: 0; }
.section-heading > span { flex: 0 0 34px; width: 34px; height: 34px; display: grid; place-items: center; color: var(--primary); background: var(--primary-soft); border-radius: 10px; font-weight: 850; }
.section-heading h2 { margin: 1px 0 3px; }
.section-heading p { margin: 0; color: var(--muted); font-size: 14px; }
.section-heading.compact { border-top: 0; padding-top: 0; margin-top: 0; }
.field-grid { display: grid; gap: 18px; }
.two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field-wide { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field > span { color: #3e495c; font-size: 13px; font-weight: 750; }
input, select, textarea { width: 100%; color: var(--ink); background: white; border: 1px solid #cfd6e2; border-radius: 11px; padding: 11px 12px; outline: none; transition: border-color .15s ease, box-shadow .15s ease; }
input, select { min-height: 46px; }
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(91,67,214,.12); }
.slot-list { display: grid; gap: 12px; }
.slot-row { display: grid; grid-template-columns: 1.2fr .8fr 1fr 40px; gap: 12px; align-items: end; padding: 15px; background: var(--soft); border: 1px solid #e4e8f0; border-radius: 14px; }
.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.toggle-card { min-height: 82px; padding: 16px; border: 1px solid var(--line); border-radius: 14px; display: flex; align-items: flex-start; gap: 12px; cursor: pointer; background: #fff; }
.toggle-card:hover { border-color: #b9b0f3; background: #fbfaff; }
.toggle-card input { width: 19px; height: 19px; min-height: auto; margin: 2px 0 0; accent-color: var(--primary); }
.toggle-card span { display: flex; flex-direction: column; gap: 3px; }
.toggle-card small { color: var(--muted); }
.deadline-field { padding: 12px 16px; border: 1px solid var(--line); border-radius: 14px; }
.form-actions { display: flex; justify-content: flex-end; margin-top: 30px; }
.honeypot { position: absolute !important; left: -9999px !important; opacity: 0 !important; pointer-events: none !important; }

.alert { margin-bottom: 18px; padding: 13px 16px; border-radius: 12px; border: 1px solid; }
.alert-success { color: #096441; background: var(--green-soft); border-color: #bde8d5; }
.alert-error { color: #8f2635; background: var(--red-soft); border-color: #f1c5cc; }
.alert-info { color: #36527b; background: #edf5ff; border-color: #c8dcf5; }
.note, .success-panel { margin-top: 20px; padding: 18px; background: var(--soft); border-radius: 12px; }

.poll-hero { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; padding: 32px; margin-bottom: 22px; }
.poll-hero h1, .admin-banner h1 { font-size: clamp(30px, 4vw, 46px); margin-bottom: 12px; }
.poll-description { max-width: 760px; color: var(--muted); }
.poll-meta { display: flex; flex-wrap: wrap; gap: 9px 22px; color: var(--muted); font-size: 14px; }
.pill-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.status-pill, .timezone-pill { padding: 5px 10px; border-radius: 999px; font-size: 12px; font-weight: 800; }
.status-open { background: var(--green-soft); color: var(--green); }
.status-closed { background: var(--red-soft); color: var(--red); }
.status-finalized { background: var(--primary-soft); color: var(--primary); }
.timezone-pill { background: var(--soft); color: var(--muted); }
.final-card { margin-bottom: 22px; padding: 24px 28px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-color: #bcb1f5; background: linear-gradient(135deg, #fff, #f4f1ff); }
.final-card h2 { font-size: 28px; }
.final-card p { margin: 0; color: var(--muted); }
.vote-card, .results-card, .comments-card, .admin-section, .share-card { padding: 30px; margin-bottom: 22px; }
.participant-fields { margin-bottom: 22px; }
.availability-list { display: grid; gap: 10px; margin-bottom: 24px; }
.availability-row { display: grid; grid-template-columns: 220px 1fr; gap: 18px; align-items: center; padding: 14px; background: var(--soft); border-radius: 14px; }
.slot-label { display: flex; flex-direction: column; }
.slot-label span { color: var(--muted); }
.segmented-control { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.segmented-control:has(.choice:nth-child(2):last-child) { grid-template-columns: repeat(2, 1fr); }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span { min-height: 43px; display: grid; place-items: center; padding: 8px 10px; border-radius: 10px; background: white; border: 1px solid var(--line); cursor: pointer; font-weight: 750; font-size: 14px; }
.choice.yes input:checked + span { color: var(--green); background: var(--green-soft); border-color: #99d8bf; }
.choice.maybe input:checked + span { color: var(--amber); background: var(--amber-soft); border-color: #ebce91; }
.choice.no input:checked + span { color: var(--red); background: var(--red-soft); border-color: #ecb8c0; }
.results-heading { display: flex; justify-content: space-between; margin-bottom: 18px; }
.empty-state { padding: 36px; text-align: center; background: var(--soft); border-radius: 14px; color: var(--muted); }
.matrix-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
.results-matrix { border-collapse: separate; border-spacing: 0; min-width: 100%; text-align: center; }
.results-matrix th, .results-matrix td { padding: 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 95px; }
.results-matrix tr:last-child th, .results-matrix tr:last-child td { border-bottom: 0; }
.results-matrix th:last-child, .results-matrix td:last-child { border-right: 0; }
.results-matrix thead th { background: var(--soft); font-size: 13px; }
.results-matrix thead th:first-child, .results-matrix tbody th, .results-matrix tfoot th { position: sticky; left: 0; z-index: 2; text-align: left; background: #fff; min-width: 160px; }
.results-matrix thead th:first-child { background: var(--soft); z-index: 3; }
.results-matrix thead th span { display: block; color: var(--muted); font-weight: 500; }
.results-matrix tbody th small { display: block; color: var(--muted); font-weight: 500; }
.vote-cell { font-size: 20px; font-weight: 900; }
.vote-yes { color: var(--green); background: var(--green-soft); }
.vote-maybe { color: var(--amber); background: var(--amber-soft); }
.vote-no { color: var(--red); background: var(--red-soft); }
.vote-unanswered { color: #9aa4b3; background: #f7f8fa; }
.total-cell { font-weight: 900; }
.best-total { color: var(--primary); background: var(--primary-soft); }
.summary-grid { display: grid; gap: 10px; }
.summary-slot { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 15px; border: 1px solid var(--line); border-radius: 13px; }
.summary-slot > div:first-child { display: flex; flex-direction: column; }
.summary-slot > div:first-child span { color: var(--muted); }
.best-slot { border-color: #bcb1f5; background: #fbfaff; }
.count-chips { display: flex; gap: 7px; align-items: center; }
.count-chips span { min-width: 42px; padding: 5px 9px; border-radius: 999px; font-weight: 800; text-align: center; }
.count-yes { color: var(--green); background: var(--green-soft); }
.count-maybe { color: var(--amber); background: var(--amber-soft); }
.count-no { color: var(--red); background: var(--red-soft); }
.comment-form { display: grid; grid-template-columns: 190px 1fr auto; gap: 12px; align-items: end; margin: 18px 0 26px; }
.comment-list { display: grid; gap: 10px; }
.comment { padding: 15px; background: var(--soft); border-radius: 12px; }
.comment > div { display: flex; justify-content: space-between; gap: 14px; }
.comment time { display: block; color: var(--muted); font-size: 12px; }
.comment p { margin: 8px 0 0; }

.admin-banner { padding: 30px; display: flex; justify-content: space-between; gap: 24px; align-items: center; margin-bottom: 20px; }
.admin-banner p { color: var(--muted); margin-bottom: 0; }
.admin-banner-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.important-card { padding: 22px; margin-bottom: 20px; border-color: #bcb1f5; background: #fbfaff; }
.important-card p { color: var(--muted); }
.link-box { display: flex; gap: 9px; }
.link-box input { background: var(--soft); color: #4b5568; }
.dashboard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.stat-card { padding: 20px; background: white; border: 1px solid var(--line); border-radius: 15px; box-shadow: 0 10px 30px rgba(24,32,51,.05); display: flex; flex-direction: column; }
.stat-card span { color: var(--muted); font-size: 13px; }
.stat-card strong { font-size: 25px; }
.share-card { display: grid; grid-template-columns: .9fr 1.3fr; gap: 28px; align-items: center; }
.share-card p { margin: 0; color: var(--muted); }
.section-title-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.admin-slot-list { display: grid; gap: 10px; }
.admin-slot { display: grid; grid-template-columns: minmax(220px, 1fr) auto auto; gap: 16px; align-items: center; padding: 14px 16px; border: 1px solid var(--line); border-radius: 13px; }
.admin-slot > div:first-child { display: flex; flex-direction: column; }
.admin-slot > div:first-child span { color: var(--muted); }
.chosen-slot { border-color: #aa9cec; background: #faf8ff; }
.chosen-label { color: var(--primary); font-weight: 850; }
.row-actions, .inline-form { display: flex; gap: 10px; align-items: center; }
.inline-form { margin-top: 18px; }
.add-slot-form { display: grid; grid-template-columns: 1.2fr .8fr 1fr auto; gap: 12px; align-items: end; margin-top: 18px; }
.compact-settings { grid-template-columns: repeat(3, 1fr); margin: 18px 0; }
.compact-settings .toggle-card { min-height: 62px; }
.admin-comment > div { align-items: flex-start; }
.danger-zone { padding: 24px 28px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-color: #efc2c8; background: #fffafb; }
.danger-zone p { margin: 0; color: var(--muted); }

@media (max-width: 900px) {
    .hero, .share-card { grid-template-columns: 1fr; gap: 18px; }
    .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
    .availability-row { grid-template-columns: 1fr; }
    .comment-form { grid-template-columns: 1fr; }
    .admin-slot { grid-template-columns: 1fr; }
    .row-actions { justify-content: flex-start; }
    .add-slot-form { grid-template-columns: repeat(2, 1fr); }
    .compact-settings { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .container { width: min(100% - 20px, 1180px); }
    .page-shell { padding-top: 22px; }
    h1 { font-size: 38px; }
    .form-card, .vote-card, .results-card, .comments-card, .admin-section, .poll-hero, .admin-banner, .share-card { padding: 20px; }
    .two-columns, .settings-grid { grid-template-columns: 1fr; }
    .field-wide { grid-column: auto; }
    .slot-row { grid-template-columns: 1fr 1fr; }
    .slot-row .field:first-child { grid-column: 1 / -1; }
    .slot-row .icon-button { align-self: center; justify-self: end; }
    .poll-hero, .final-card, .admin-banner, .danger-zone { flex-direction: column; align-items: stretch; }
    .segmented-control { grid-template-columns: 1fr; }
    .summary-slot { align-items: flex-start; flex-direction: column; }
    .dashboard-grid { grid-template-columns: 1fr 1fr; }
    .link-box { flex-direction: column; }
    .add-slot-form { grid-template-columns: 1fr; }
    .site-header .button { display: none; }
}

/* Secure-account additions */
.header-nav { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; justify-content: flex-end; }
.header-nav form { margin: 0; }
.compact-hero { align-items: center; }
.auth-page .narrow-card { margin-top: 3rem; }
.field small { display: block; margin-top: .35rem; color: var(--muted); }
@media (max-width: 700px) {
  .header-inner { align-items: flex-start; }
  .header-nav { width: 100%; justify-content: flex-start; }
}