:root {
  --aibc-navy: #0f172a;
  --aibc-navy-2: #1e293b;
  --aibc-blue: #2563eb;
  --aibc-bg: #f1f5f9;
  --aibc-card: #ffffff;
  --aibc-border: #dbe3ef;
  --aibc-text: #111827;
  --aibc-muted: #64748b;
  --aibc-radius: 18px;
  --aibc-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  font-size: 16px;
}

body {
  min-height: 100%;
  margin: 0;
  background: linear-gradient(180deg, #f8fafc 0%, var(--aibc-bg) 100%);
  color: var(--aibc-text);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Yu Gothic", YuGothic, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--aibc-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.aibc-site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.aibc-site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 227, 239, 0.9);
  backdrop-filter: blur(14px);
}

.admin-bar .aibc-site-header {
  top: 32px;
}

.aibc-site-header__inner {
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.aibc-site-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--aibc-navy);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.aibc-site-brand:hover {
  text-decoration: none;
}

.aibc-site-brand__logo img {
  width: auto;
  max-height: 48px;
}

.aibc-site-brand__text {
  display: grid;
  gap: 1px;
}

.aibc-site-brand__school {
  font-size: 15px;
}

.aibc-site-brand__system {
  font-size: 22px;
  line-height: 1.2;
}

.aibc-site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.aibc-site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--aibc-border);
  border-radius: 999px;
  color: var(--aibc-navy);
  background: #fff;
  font-weight: 700;
  font-size: 14px;
}

.aibc-site-nav a:hover {
  text-decoration: none;
  border-color: var(--aibc-navy);
}

.aibc-site-nav__official {
  color: var(--aibc-blue) !important;
}

.aibc-site-main {
  flex: 1;
  width: 100%;
  padding: 34px 0 54px;
}

.aibc-theme-front,
.aibc-theme-page {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.aibc-theme-page__header {
  margin: 0 0 24px;
  padding: 24px 28px;
  border-radius: var(--aibc-radius);
  background: var(--aibc-card);
  border: 1px solid var(--aibc-border);
  box-shadow: var(--aibc-shadow);
}

.aibc-theme-page__header h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.25;
  letter-spacing: 0.04em;
}

.aibc-theme-page__body > *:first-child {
  margin-top: 0;
}

.aibc-theme-card {
  padding: 34px;
  border-radius: var(--aibc-radius);
  background: var(--aibc-card);
  border: 1px solid var(--aibc-border);
  box-shadow: var(--aibc-shadow);
}

.aibc-theme-card h1,
.aibc-theme-card h2 {
  margin-top: 0;
  line-height: 1.35;
}

.aibc-theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--aibc-navy);
  color: #fff;
  font-weight: 800;
}

.aibc-theme-btn:hover {
  color: #fff;
  text-decoration: none;
}

.aibc-site-footer {
  margin-top: auto;
  padding: 28px 0;
  border-top: 1px solid var(--aibc-border);
  background: #fff;
}

.aibc-site-footer__inner {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--aibc-muted);
  font-size: 14px;
}

.aibc-site-footer p {
  margin: 0;
}

/* AIBC Entry System plugin visual integration */
.aibc-wrap {
  max-width: none !important;
  margin: 0 auto !important;
  padding: 0 !important;
}

.aibc-hero {
  margin-bottom: 28px !important;
  border-radius: 22px !important;
  background: linear-gradient(135deg, var(--aibc-navy), #334155) !important;
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.16) !important;
}

.aibc-card,
.aibc-status-box > div,
.aibc-userbar,
.aibc-resubmit-box,
.aibc-doc-item {
  box-shadow: var(--aibc-shadow);
}

.aibc-card {
  border-color: var(--aibc-border) !important;
}

.aibc-btn,
.aibc-tabs a,
.aibc-form input,
.aibc-form select,
.aibc-form textarea,
.aibc-inline-options {
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.aibc-btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.aibc-form input:focus,
.aibc-form select:focus,
.aibc-form textarea:focus {
  outline: none;
  border-color: var(--aibc-blue) !important;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.aibc-photo-preview {
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.1);
}

@media (max-width: 782px) {
  .admin-bar .aibc-site-header {
    top: 46px;
  }
}

@media (max-width: 768px) {
  .aibc-site-header {
    position: static;
  }

  .admin-bar .aibc-site-header {
    top: 0;
  }

  .aibc-site-header__inner,
  .aibc-theme-front,
  .aibc-theme-page,
  .aibc-site-footer__inner {
    width: min(100% - 28px, 520px);
  }

  .aibc-site-header__inner {
    min-height: auto;
    padding: 14px 0;
    display: grid;
    gap: 12px;
  }

  .aibc-site-brand__school {
    font-size: 13px;
  }

  .aibc-site-brand__system {
    font-size: 19px;
  }

  .aibc-site-nav {
    justify-content: flex-start;
  }

  .aibc-site-nav a {
    flex: 1 1 auto;
    justify-content: center;
    font-size: 13px;
  }

  .aibc-site-main {
    padding: 22px 0 38px;
  }

  .aibc-theme-card,
  .aibc-theme-page__header {
    padding: 22px;
  }

  .aibc-site-footer__inner {
    display: grid;
    justify-content: start;
  }

  .aibc-hero h1 {
    font-size: 28px !important;
    letter-spacing: 0.04em !important;
  }

  .aibc-card h2 {
    font-size: 22px !important;
  }

  .aibc-actions {
    display: grid !important;
  }

  .aibc-btn {
    width: 100%;
    text-align: center;
  }
}