/* Common styles for kAIros (core + accounts) */
:root {
  --bg:#f5f1e8;
  --fg:#111111;
  --muted:#666666;
  --border:#e5e7eb;
  --accent:#111827;
  --accent-contrast:#ffffff;
  --radius:12px;
  --shadow:0 10px 30px rgba(15, 23, 42, 0.08);
}

/* Reset & base */
*,
*::before,
*::after {
  box-sizing:border-box;
}

html,
body {
  height:100%;
}

body {
  margin:0;
  font-family:system-ui,-apple-system,"Helvetica Neue","Segoe UI",Roboto,Arial,"Noto Sans JP",sans-serif;
  color:var(--fg);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

a {
  color:inherit;
  text-decoration:none;
}

a:hover {
  opacity:.9;
}

img {
  max-width:100%;
  height:auto;
  display:block;
}

/* Layout */
header {
  border-bottom:1px solid var(--border);
  background:rgba(245,241,232,0.94);
  backdrop-filter:blur(10px);
  position:sticky;
  top:0;
  z-index:10;
}

.header-inner {
  max-width:960px;
  margin:0 auto;
  padding:12px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.brand {
  font-weight:700;
  letter-spacing:.08em;
  font-size:18px;
}

.brand a {
  text-decoration:none;
}

.brand-logo {
  height:32px;
  width:auto;
  display:block;
}

.header-nav {
  display:flex;
  align-items:center;
  gap:12px;
  font-size:14px;
}

.header-nav a {
  color:var(--muted);
}

.header-nav a:hover {
  color:var(--fg);
}

main {
  max-width:880px;
  margin:0 auto;
  padding:24px 16px 80px;
}

footer {
  border-top:1px solid #eee;
  padding:24px 16px;
  text-align:center;
  color:#666;
  font-size:13px;
}

.container {
  max-width:960px;
  margin:0 auto;
  padding:0 16px;
}

.section {
  margin:24px 0;
}

.card {
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow);
  background:#fff;
}

/* Typography & utilities */
h1,
h2,
h3 {
  margin:0 0 .5rem;
  font-weight:600;
}

h1 { font-size:1.8rem; }
h2 { font-size:1.4rem; }
h3 { font-size:1.1rem; }

p {
  margin:.5rem 0;
  line-height:1.7;
}

.lead { font-size:1rem; }

.muted { color:var(--muted); }

.cap {
  color:var(--muted);
  font-size:13px;
}

.hr {
  height:1px;
  background:var(--border);
  margin:24px 0;
}

.mb-2 { margin-bottom:.5rem; }
.mt-2 { margin-top:.5rem; }

.reading {
  line-height:1.8;
  white-space:pre-line;
  margin:12px 0;
}

/* Grid */
.grid {
  display:grid;
  gap:16px;
}

.grid-2 {
  grid-template-columns:repeat(2,minmax(0,1fr));
}

@media (max-width: 720px) {
  .header-inner { padding-inline:12px; }
  main { padding-inline:12px; }
  .grid-2 { grid-template-columns:1fr; }
}

/* Tables */
table {
  width:100%;
  border-collapse:collapse;
  margin:.5rem 0 1rem;
}

th,
td {
  border:1px solid var(--border);
  padding:.5rem;
  text-align:left;
  vertical-align:top;
  font-size:14px;
}

th {
  background:#f9fafb;
  text-align:center;
}

.tbl-center td {
  text-align:center;
}

/* Buttons */
.btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:8px 16px;
  border-radius:999px;
  border:1px solid var(--accent);
  background:#fff;
  color:var(--fg);
  font-size:14px;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .15s ease,box-shadow .15s ease,transform .05s ease;
}

.btn:hover {
  box-shadow:0 10px 24px rgba(15,23,42,0.12);
  transform:translateY(-1px);
}

.btn:active {
  box-shadow:none;
  transform:translateY(0);
}

.btn-primary {
  background:var(--accent);
  color:var(--accent-contrast);
}

.btn-ghost {
  background:#fff;
  color:var(--fg);
}

.btn-secondary {
  background:#f3f4f6;
  color:var(--fg);
  border-color:#d1d5db;
}

.btn-success,
.btn-outline-success {
  border-color:#16a34a;
  color:#16a34a;
}

.btn-success {
  background:#16a34a;
  color:#fff;
}

/* 目立たせる CTA ボタン（results の「メールで登録」用） */
.btn-cta {
  padding:12px 24px;
  font-size:1rem;
  font-weight:600;
  border-radius:999px;
  box-shadow:0 16px 35px rgba(15,23,42,0.35);
}

/* Forms */
.row {
  margin:.6rem 0;
}

.form-group {
  margin:.6rem 0;
}

label {
  display:block;
  margin:.25rem 0 .35rem;
  font-size:.95rem;
  color:var(--muted);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"],
select,
textarea {
  width:100%;
  padding:.6rem .7rem;
  border:1px solid #ccc;
  border-radius:8px;
  outline:none;
  font-size:14px;
}

input:focus,
select:focus,
textarea:focus {
  border-color:#999;
  box-shadow:0 0 0 3px rgba(15,23,42,0.08);
}

.helptext {
  font-size:.85rem;
  color:#888;
  margin-top:.3rem;
}

.errors,
.errorlist {
  color:#b00020;
  font-size:.9rem;
  margin:.3rem 0 0;
  list-style:disc;
  padding-left:1.2rem;
}

/* Auth pages */
.auth-grid {
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  align-items:start;
}

@media (min-width: 840px) {
  .auth-grid { grid-template-columns:1fr 1fr; }
}

.auth-card {
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  background:#fff;
  box-shadow:var(--shadow);
}

.auth-card h3 {
  margin:0 0 .6rem;
  font-size:1.15rem;
}

.auth-card .desc {
  margin:0 0 1rem;
  color:#666;
  font-size:.95rem;
}

.help-links {
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:.8rem;
  font-size:.9rem;
}

.help-links a {
  color:#2563eb;
  text-decoration:underline;
}

/* Box (signup 用のシンプルなカード) */
.box {
  max-width:560px;
  margin:0 auto;
  padding:1.2rem;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:#fff;
  box-shadow:var(--shadow);
}

/* Badges & notes (help ページなど) */
.badge {
  display:inline-block;
  padding:.15rem .5rem;
  border:1px solid var(--border);
  border-radius:999px;
  font-size:.85em;
  background:#fafafa;
}

.note {
  background:#f9fbff;
  border:1px dashed #cfe0ff;
  padding:12px;
  border-radius:10px;
}

/* Misc */
.back {
  display:inline-block;
  margin-bottom:16px;
  color:#2563eb;
  text-decoration:none;
}

.back:hover {
  text-decoration:underline;
}

.loading-text {
  font-size:.9rem;
  color:var(--muted);
}

.spinner {
  width:20px;
  height:20px;
  border-radius:999px;
  border:2px solid #e5e7eb;
  border-top-color:#111827;
  animation:spin 1s linear infinite;
}

@keyframes spin {
  to { transform:rotate(360deg); }
}