:root {
    --blue: #0099cc;
    --blue-dark: #006a8a;
    --deep: #003a5c;
    --sand: #fef4d6;
    --pool: #cfecf5;
    --warn: #c0392b;
    --warn-bg: #fff5f3;
    --line: #d8e0e5;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
    background: linear-gradient(180deg, #b6e3f4 0%, #e6f5fa 280px, #f7fbfd 480px, #f7fbfd 100%);
    color: var(--deep);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ---------- HERO / INVITE HEADER ---------- */
.hero {
    max-width: 640px;
    margin: 0 auto;
    padding: 32px 20px 12px;
    text-align: center;
}
.hero .splash { font-size: 48px; line-height: 1; margin-bottom: 6px; }
.hero h1 {
    font-size: 46px;
    margin: 0 0 4px;
    letter-spacing: -1px;
}
.hero .subtitle {
    margin: 0 0 18px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--blue-dark);
    font-weight: 600;
}
.hero .info {
    background: white;
    border-radius: 16px;
    padding: 20px 18px;
    box-shadow: 0 6px 24px rgba(0,90,140,0.12);
    font-size: 16px;
}
.hero .info > div { margin: 3px 0; }
.hero .info .when { font-size: 20px; margin-bottom: 4px; }
.hero .info .where { color: #335; }
.hero .info .host { color: #557; font-size: 14px; margin-bottom: 6px; }
.hero .info .bring { margin-top: 12px; color: #b66200; font-weight: 600; }
.hero .info .deadline {
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px dashed #d8e0e5;
    font-size: 14px;
    color: #557;
}

/* ---------- FORM ---------- */
.rsvp-form {
    max-width: 640px;
    margin: 24px auto;
    padding: 0 20px 48px;
}
.rsvp-form label {
    display: block;
    margin: 14px 0;
    font-weight: 600;
    font-size: 14px;
    color: #234;
}
.rsvp-form .row { display: flex; gap: 14px; }
.rsvp-form .row > label { flex: 1; margin: 14px 0; }
.rsvp-form input[type=text],
.rsvp-form input[type=email],
.rsvp-form input[type=tel],
.rsvp-form input[type=number],
.rsvp-form select,
.rsvp-form textarea {
    display: block;
    width: 100%;
    margin-top: 5px;
    padding: 11px 13px;
    font-size: 16px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: white;
    color: var(--deep);
    font-family: inherit;
    font-weight: 400;
}
.rsvp-form input:focus, .rsvp-form select:focus, .rsvp-form textarea:focus {
    outline: 0;
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(0,153,204,0.18);
}
.rsvp-form fieldset {
    border: 1px solid var(--line);
    border-radius: 12px;
    margin: 22px 0;
    padding: 10px 16px 18px;
    background: white;
}
.rsvp-form fieldset legend {
    font-weight: 700;
    padding: 0 8px;
    color: var(--deep);
}
.rsvp-form .hint {
    font-size: 14px;
    color: #677;
    margin: 4px 0 14px;
}
.kid-row {
    display: grid;
    grid-template-columns: 1.6fr 0.7fr 1.6fr 1.2fr 32px;
    gap: 8px;
    margin: 8px 0;
    align-items: center;
}
.kid-row[hidden] { display: none !important; }
.kid-row input, .kid-row select { margin-top: 0; }
.kid-row .remove-kid {
    background: transparent;
    border: 1px solid #d8e0e5;
    color: #99a;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    font-family: inherit;
}
.kid-row .remove-kid:hover {
    background: var(--warn);
    color: white;
    border-color: var(--warn);
}
.add-btn {
    display: inline-block;
    margin-top: 8px;
    background: white;
    color: var(--blue-dark);
    border: 1.5px dashed var(--blue);
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}
.add-btn:hover { background: var(--pool); }
@media (max-width: 620px) {
    .kid-row { grid-template-columns: 1fr 1fr 32px; }
    .kid-row .remove-kid { grid-column: 3; grid-row: 1; }
    .rsvp-form .row { flex-direction: column; gap: 0; }
}

button[type=submit] {
    background: var(--blue);
    color: white;
    border: 0;
    padding: 15px 26px;
    font-size: 17px;
    font-weight: 700;
    border-radius: 999px;
    cursor: pointer;
    margin-top: 20px;
    width: 100%;
    box-shadow: 0 4px 14px rgba(0,153,204,0.35);
    transition: background .15s, transform .05s;
}
button[type=submit]:hover { background: var(--deep); }
button[type=submit]:active { transform: translateY(1px); }

/* ---------- THANKS ---------- */
.thanks {
    max-width: 560px;
    margin: 0 auto;
    padding: 60px 24px;
    text-align: center;
}
.thanks .splash { font-size: 64px; margin-bottom: 8px; }
.thanks h1 { font-size: 40px; margin: 0 0 12px; }
.thanks .info-box {
    background: white;
    border-radius: 14px;
    padding: 18px;
    margin: 22px auto;
    max-width: 420px;
    box-shadow: 0 4px 18px rgba(0,90,140,0.12);
    font-size: 16px;
}
.thanks .reminder { font-size: 17px; color: #b66200; }
.thanks .change { font-size: 14px; color: #557; margin-top: 28px; }

/* ---------- LOGIN ---------- */
.login {
    max-width: 320px;
    margin: 100px auto;
    padding: 24px;
    text-align: center;
    background: white;
    border-radius: 14px;
    box-shadow: 0 4px 20px rgba(0,90,140,0.12);
}
.login h1 { margin: 0 0 18px; font-size: 22px; }
.login input {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border: 1px solid var(--line);
    border-radius: 9px;
    margin-bottom: 10px;
    text-align: center;
    letter-spacing: 2px;
}
.login button {
    width: 100%;
    background: var(--blue);
    color: white;
    border: 0;
    padding: 12px;
    border-radius: 999px;
    font-weight: 700;
    cursor: pointer;
    font-size: 16px;
}
.login .err { color: var(--warn); font-size: 14px; }

/* ---------- ADMIN ---------- */
body.admin {
    background: #f3f6f8;
}
body.admin header {
    background: var(--deep);
    color: white;
    padding: 22px 24px;
}
body.admin header h1 { margin: 0; font-size: 22px; }
body.admin nav { margin-top: 8px; font-size: 14px; }
body.admin nav a {
    color: #b6e3f4;
    margin-right: 16px;
    text-decoration: none;
}
body.admin nav a:hover { color: white; text-decoration: underline; }

.totals {
    display: flex;
    gap: 12px;
    max-width: 1200px;
    margin: 16px auto;
    padding: 0 20px;
    flex-wrap: wrap;
}
.totals .card {
    flex: 1;
    min-width: 140px;
    background: white;
    padding: 14px 16px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.totals .card.big { background: var(--blue); color: white; }
.totals .card.big .label { color: rgba(255,255,255,0.85); }
.totals .card.big .num { color: white; }
.totals .label {
    font-size: 11px;
    text-transform: uppercase;
    color: #778;
    letter-spacing: 1.2px;
    font-weight: 600;
}
.totals .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--deep);
    line-height: 1.1;
    margin-top: 2px;
}

.callout {
    max-width: 1200px;
    margin: 16px auto;
    padding: 16px 22px;
    background: white;
    border-left: 4px solid var(--blue);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.callout.warn { background: var(--warn-bg); border-left-color: var(--warn); }
.callout h2 { margin: 0 0 8px; font-size: 16px; }
.callout ul { margin: 0; padding-left: 22px; font-size: 14px; }
.callout li { margin: 3px 0; }

body.admin section { max-width: 1200px; margin: 22px auto; padding: 0 20px; }
body.admin section h2 { font-size: 16px; margin: 0 0 10px; color: #445; }

.table-wrap {
    background: white;
    border-radius: 10px;
    overflow: auto;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
body.admin table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
body.admin th, body.admin td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #eef1f3;
    vertical-align: top;
}
body.admin th {
    background: #eaf2f6;
    font-size: 11px;
    text-transform: uppercase;
    color: #557;
    letter-spacing: 1px;
    white-space: nowrap;
}
body.admin td.strong { font-weight: 700; }
body.admin td.num-cell { text-align: center; font-weight: 700; }
body.admin td.nowrap { white-space: nowrap; font-size: 12px; color: #557; }
body.admin td.notes { font-size: 13px; color: #557; max-width: 200px; }
body.admin .kid { margin: 3px 0; font-size: 13px; }
body.admin .kid .al { color: var(--warn); font-weight: 600; font-size: 12px; margin-top: 1px; }
body.admin .del {
    background: transparent;
    border: 1px solid #ddd;
    color: #999;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
}
body.admin .del:hover { background: var(--warn); color: white; border-color: var(--warn); }
body.admin .empty {
    padding: 30px;
    background: white;
    border-radius: 10px;
    text-align: center;
    color: #889;
}