/* yatt theme — inspired by kodama-lab.com (Hosei blue + orange) */

:root {
  --bg-0: #ffffff;
  --bg-1: #f6f8fc;
  --bg-2: #eef2f8;
  --surface: #ffffff;
  --surface-soft: #f7f9fd;
  --surface-strong: #eef3fa;
  --border: rgba(0, 63, 140, 0.14);
  --border-strong: rgba(0, 63, 140, 0.28);
  --text: #16223a;
  --text-dim: #4a5a78;
  --text-mute: #7c89a3;
  --primary: #003f8c;
  --primary-strong: #002a66;
  --primary-soft: #e6eef9;
  --accent: #f08300;
  --accent-strong: #d97200;
  --accent-soft: #fff1de;
  --grad: linear-gradient(135deg, #003f8c 0%, #2a6ec3 55%, #f08300 100%);
  --grad-soft: linear-gradient(135deg, rgba(0,63,140,0.10) 0%, rgba(240,131,0,0.10) 100%);
  --shadow-1: 0 1px 2px rgba(15, 30, 60, 0.04), 0 8px 24px rgba(15, 30, 60, 0.06);
  --shadow-2: 0 4px 12px rgba(15, 30, 60, 0.08), 0 16px 40px rgba(15, 30, 60, 0.10);
  --radius: 14px;
  --radius-lg: 22px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Noto Sans JP', system-ui, -apple-system, "Helvetica Neue", sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg-0) !important;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Soft floating orbs (orange + blue) */
body::before, body::after {
  content: '';
  position: fixed;
  width: 50vmax; height: 50vmax;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.20;
  z-index: -2;
  pointer-events: none;
  animation: yatt-float 24s ease-in-out infinite;
}
body::before {
  background: radial-gradient(circle, #003f8c 0%, transparent 60%);
  top: -22vmax; left: -18vmax;
}
body::after {
  background: radial-gradient(circle, #f08300 0%, transparent 60%);
  bottom: -25vmax; right: -22vmax;
  animation-delay: -12s;
}
@keyframes yatt-float {
  0%, 100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(8vmax, -4vmax) scale(1.08); }
  66%      { transform: translate(-6vmax, 5vmax) scale(0.95); }
}

/* Subtle grid overlay */
body > .yatt-grid {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(0, 63, 140, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 63, 140, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
          mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* Topbar (a thin glass strip across the top) */
.yatt-topbar {
  position: sticky; top: 0; z-index: 50;
  -webkit-backdrop-filter: blur(18px);
          backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--border);
  padding: 12px 22px;
  display: flex; align-items: center; gap: 14px;
}
.yatt-topbar .yatt-brand {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700; letter-spacing: .03em;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
}
.yatt-topbar .yatt-brand .yatt-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px rgba(240, 131, 0, .55);
}
.yatt-topbar .yatt-brand .grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.yatt-topbar .yatt-spacer { flex: 1; }
.yatt-topbar .yatt-nav {
  display: flex; gap: 10px; align-items: center;
}
.yatt-topbar .yatt-nav a {
  padding: 6px 12px; border-radius: 999px;
  font-size: 13px; color: var(--text-dim); text-decoration: none;
  border: 1px solid transparent;
  transition: all .2s;
}
.yatt-topbar .yatt-nav a:hover {
  color: var(--primary); border-color: var(--border);
  background: var(--primary-soft);
}

/* General typography overrides */
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Inter', 'Noto Sans JP', sans-serif;
  color: var(--primary);
  letter-spacing: -0.01em;
}
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }

/* The big title font that appears in many pages */
#wrapper { padding: 22px 28px; }
#wrapper > p > #welcome_i18n,
#welcome_i18n {
  font-family: 'Space Grotesk', 'Klee One', 'Yu Mincho', serif !important;
  font-weight: 700 !important;
  font-size: clamp(2rem, 4.4vw, 3.6rem) !important;
  line-height: 1.15 !important;
  color: transparent !important;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  text-align: center;
  margin: 18px 0 8px;
}

/* Subtitle bar (used in #timetable_i18n, #lectures_i18n, etc.) */
.subtitle {
  font-family: 'Space Grotesk', sans-serif !important;
  font-size: 1.5rem !important;
  font-weight: 600 !important;
  color: var(--primary) !important;
  position: relative;
  padding-left: 14px;
  margin: 28px 0 16px !important;
  letter-spacing: -0.01em;
  display: inline-block;
}
.subtitle::before {
  content: '';
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 4px; border-radius: 2px;
  background: var(--accent);
}

/* Wrapper card */
#wrapper.ui-widget-content,
#wrapper {
  background: rgba(255, 255, 255, 0.78) !important;
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-1) !important;
  margin: 22px auto;
  max-width: 1240px;
  padding: 28px !important;
}

/* Buttons */
.btn,
button.btn,
input[type='submit'].btn,
button.bbutton,
.bbutton {
  font-family: 'Inter', sans-serif !important;
  font-weight: 500 !important;
  border-radius: 10px !important;
  padding: 7px 14px !important;
  border: 1px solid var(--border) !important;
  background: var(--surface) !important;
  color: var(--text) !important;
  text-shadow: none !important;
  box-shadow: none !important;
  transition: all .2s;
  cursor: pointer;
}
.btn:hover, button.btn:hover, .bbutton:hover {
  border-color: var(--primary) !important;
  background: var(--primary-soft) !important;
  color: var(--primary) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-1) !important;
}
.btn-success, .btn.btn-success, input.btn-success, input.btn.btn-success {
  background: var(--primary) !important;
  background-image: var(--grad) !important;
  color: #fff !important;
  border: 1px solid transparent !important;
}
.btn-success:hover, .btn.btn-success:hover {
  filter: brightness(1.06);
  color: #fff !important;
  box-shadow: var(--shadow-2) !important;
}
.btn-primary {
  background: var(--primary) !important;
  color: #fff !important;
  border: 1px solid transparent !important;
}

/* Inputs */
input[type='text'], input[type='password'], input[type='email'],
textarea, select {
  font-family: 'Inter', 'Noto Sans JP', sans-serif !important;
  font-size: 14px !important;
  background: var(--surface) !important;
  color: var(--text) !important;
  border: 1px solid var(--border) !important;
  border-radius: 10px !important;
  padding: 8px 10px !important;
  box-shadow: none !important;
  transition: border-color .15s, box-shadow .15s;
}
input[type='text']:focus, input[type='password']:focus,
textarea:focus, select:focus {
  outline: none !important;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(240, 131, 0, 0.15) !important;
}

/* Tables */
table.table {
  border-collapse: separate !important;
  border-spacing: 0 !important;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-1);
}
table.table th {
  background: var(--surface-strong) !important;
  color: var(--text-mute) !important;
  font-family: 'Space Grotesk', sans-serif !important;
  font-size: 11px !important;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 600 !important;
  padding: 10px 12px !important;
  border: 0 !important;
}
table.table td {
  padding: 10px 12px !important;
  border-top: 1px solid var(--border) !important;
  vertical-align: middle !important;
}

/* Modals */
.modal {
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-2) !important;
  border: 1px solid var(--border) !important;
  background: var(--surface) !important;
}
.modal-header {
  border-bottom: 1px solid var(--border) !important;
  background: var(--surface-soft) !important;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}
.modal-footer {
  border-top: 1px solid var(--border) !important;
  background: var(--surface-soft) !important;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg) !important;
}

/* Time-table cells (the big home / edit grids) */
table#lecture_table td[style*='#CCFFFF'],
td[style*='#CCFFFF'] {
  background: var(--surface-soft) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
}

/* Inline class-item input on /clayout */
input.class-item {
  border: 1px dashed var(--border-strong) !important;
  background: var(--surface-soft) !important;
}
input.class-item:focus {
  border: 1px solid var(--accent) !important;
  background: var(--surface) !important;
}

/* Right-side group title in /lecture and /clayout */
td.righttitle2 {
  font-family: 'Space Grotesk', sans-serif !important;
  font-size: 1rem !important;
  color: var(--primary) !important;
  font-weight: 600 !important;
  border-bottom: 2px solid var(--accent) !important;
  padding: 8px 6px !important;
}
td.rightcontents2 {
  padding: 4px 6px !important;
  border-bottom: 1px solid var(--border) !important;
}

/* Login containers — center & glass card */
#login-container,
#account-form-container {
  background: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-1);
}

/* "Pill" labels (eyebrow-style) */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--primary-soft);
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
}

/* Override ugly #1717FF color on cell text */
td[style*='#1717FF'], td[style*='#0B3382'] {
  color: var(--primary) !important;
}

/* Header pill row — the topbar inside views */
#wrapper > p:first-of-type + .subtitle,
#wrapper > .subtitle {
  margin-top: 0 !important;
}

/* Print page table */
#print table {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  border: 1px solid var(--border);
  overflow: hidden;
}

/* Clean up huge centered titles like cls.title */
div[align='center'][style*='font-size:4.5em'] {
  font-size: 2.4rem !important;
  font-family: 'Space Grotesk', 'Inter', sans-serif !important;
  color: var(--primary) !important;
  background: none !important;
  margin: 18px 0 8px !important;
  line-height: 1.2 !important;
}
div[align='center'][style*='font-size:4.5em'] textarea {
  font-size: 1.2rem !important;
  font-family: 'Inter', sans-serif !important;
}

/* Footer "Last update" line */
hr + div[align='center'] {
  color: var(--text-mute);
  font-size: 12px;
}

/* ==========================================================================
   Login / first screen — hero + glass card (kodama-lab style)
   ========================================================================== */
.login-hero {
  max-width: 560px;
  margin: 0 auto;
  padding: 48px 24px 8px;
  text-align: center;
}

.login-hero .hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  margin-bottom: 6px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--primary-soft);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--primary);
}
.login-hero .hero-eyebrow .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(240, 131, 0, 0.7);
  animation: yatt-pulse 2s ease-in-out infinite;
}
@keyframes yatt-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(.85); }
}
.login-hero .hero-eyebrow select {
  background: var(--surface) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  padding: 2px 6px !important;
  font-size: 12px !important;
}
.login-hero .hero-eyebrow #langbrowser { color: var(--text-mute); }

/* The big gradient YaTT title (id rule below also targets #welcome_i18n) */
.login-hero .login-title {
  margin: 10px 0 4px !important;
}
.login-hero .login-tagline {
  margin: 0 0 22px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-mute);
}

/* Glass login card */
.login-card {
  max-width: 420px;
  margin: 0 auto;
  padding: 30px 32px 26px;
  text-align: left;
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
}
.login-card .card-subtitle {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin: 0 0 18px;
}

.login-card #login-form { margin: 0; }
.login-card #login-form label {
  display: block;
  margin: 12px 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
}
.login-card #login-form input[type='text'],
.login-card #login-form input[type='password'] {
  display: block;
  width: 100%;
  padding: 11px 14px !important;
  font-size: 15px !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 12px !important;
}

/* Primary "Sign In" button — full width gradient */
.login-card #btn-login.btn,
.login-card #btn-login.btn-primary {
  display: block;
  width: 100%;
  margin: 22px 0 14px;
  padding: 12px 18px !important;
  font-family: 'Space Grotesk', 'Inter', sans-serif !important;
  font-size: 15px !important;
  font-weight: 600 !important;
  color: #fff !important;
  background: var(--grad) !important;
  border: 1px solid transparent !important;
  border-radius: 12px !important;
  box-shadow: 0 0 0 1px rgba(0,63,140,0.18), 0 12px 28px rgba(240,131,0,0.16) !important;
  cursor: pointer;
}
.login-card #btn-login.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  color: #fff !important;
}

.login-card #remember-me.checkbox,
.login-card #remember-me {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-mute);
}
.login-card #remember-me input[type='checkbox'] { margin: 0; }

.login-card hr {
  margin: 16px 0 14px;
  border: 0;
  border-top: 1px solid var(--border);
}
.login-card .btm-links {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
}
.login-card .btm-links a { font-weight: 500; }
.login-card .clear-fix { clear: both; }

/* ==========================================================================
   Top-right auth widget (public landing) — language + signup + sign-in popover
   ========================================================================== */
.yatt-auth {
  display: flex;
  align-items: center;
  gap: 12px;
}

.yatt-auth .yatt-lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-mute);
}
.yatt-auth .yatt-lang select {
  background: var(--surface) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  padding: 4px 8px !important;
  font-size: 12px !important;
  cursor: pointer;
}

.yatt-auth-up {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  white-space: nowrap;
}
.yatt-auth-up:hover { color: var(--accent); }

/* Sign-in popover via native <details> (no JS needed) */
details.auth-pop { position: relative; }
details.auth-pop > summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--grad);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 0 0 1px rgba(0,63,140,0.18), 0 8px 20px rgba(240,131,0,0.16);
  user-select: none;
  transition: filter .2s, transform .15s;
}
details.auth-pop > summary::-webkit-details-marker { display: none; }
details.auth-pop > summary:hover { filter: brightness(1.05); transform: translateY(-1px); }
details.auth-pop[open] > summary .auth-caret { transform: rotate(180deg); }
.auth-caret { font-size: 10px; transition: transform .2s; }

.auth-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 344px;
  padding: 22px 22px 18px;
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  z-index: 60;
  animation: auth-pop-in .16s ease-out;
}
@keyframes auth-pop-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
/* little arrow pointing up to the trigger */
.auth-panel::before {
  content: '';
  position: absolute;
  top: -7px; right: 28px;
  width: 12px; height: 12px;
  background: #fff;
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: rotate(45deg);
}

/* Neutralise legacy fixed widths/floats from stylesheets/style.css */
.auth-panel #login-container2 { width: 100% !important; }
.auth-panel #login-container2 .checkbox { margin: 0 !important; }
.auth-panel #login-form { margin: 0; }
.auth-panel #login-form label {
  display: block;
  margin: 10px 0 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
}
.auth-panel #login-form input[type='text'],
.auth-panel #login-form input[type='password'] {
  display: block;
  width: 100%;
  min-height: 46px;
  padding: 13px 14px !important;
  font-size: 15px !important;
  line-height: 1.5 !important;   /* legacy style.css sets body line-height:0.7em */
  border: 1px solid var(--border-strong) !important;
  border-radius: 10px !important;
}
.auth-panel #btn-login.btn,
.auth-panel #btn-login.btn-primary {
  display: block;
  width: 100%;
  margin: 16px 0 12px;
  padding: 11px 16px !important;
  font-family: 'Space Grotesk', 'Inter', sans-serif !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  color: #fff !important;
  background: var(--grad) !important;
  border: 1px solid transparent !important;
  border-radius: 10px !important;
  cursor: pointer;
}
.auth-panel #btn-login.btn:hover { filter: brightness(1.05); color: #fff !important; }
.auth-panel #remember-me.checkbox,
.auth-panel #remember-me {
  display: flex; align-items: center; gap: 8px; margin: 0;
  font-size: 12px; font-weight: 500; color: var(--text-mute);
}
.auth-panel #remember-me input[type='checkbox'] { margin: 0; }
.auth-panel .btm-links { margin-top: 12px; font-size: 12px; }

@media (max-width: 560px) {
  .yatt-auth .yatt-lang #language_i18n,
  .yatt-auth-up { display: none; }
  .auth-panel { width: 280px; }
}

/* ==========================================================================
   Public landing hero + cool time-table
   ========================================================================== */
.tt-hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 6px;
  text-align: center;
}
.tt-hero .hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  margin-bottom: 8px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--primary-soft);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--primary);
}
.tt-hero .hero-eyebrow .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(240, 131, 0, 0.7);
  animation: yatt-pulse 2s ease-in-out infinite;
}
.tt-hero .login-title { margin: 8px 0 4px !important; }
.tt-hero .login-tagline {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.tt-wrap { overflow-x: auto; padding: 6px; }

#lecture_table {
  width: 100% !important;          /* beat legacy #lecture_table { width:0px } */
  table-layout: fixed;
  margin: 0 auto;
  border-collapse: separate !important;
  border-spacing: 8px;
  text-align: center;
  background: none !important;
  border: 0 !important;
  box-shadow: none !important;
}
/* Legacy stylesheets/style.css zeroes td padding via #lecture_table tr td */
#lecture_table tr td.tt-cell { padding: 0 !important; }

/* Header row: days */
#lecture_table thead th.tt-day {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
  padding: 6px 0 10px;
  border: 0 !important;
  background: none !important;
}
#lecture_table thead th.tt-corner {
  width: 84px;
  border: 0 !important;
  background: none !important;
}

/* Left column: period number + time */
#lecture_table th.tt-period {
  width: 84px;
  text-align: right;
  padding: 0 12px 0 0 !important;
  border: 0 !important;
  background: none !important;
  vertical-align: middle;
  line-height: 1.15;
}
#lecture_table th.tt-period .tt-period-n {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
#lecture_table th.tt-period .tt-period-t {
  display: block;
  font-size: 10px;
  color: var(--text-mute);
  letter-spacing: .02em;
}

/* Cells */
#lecture_table td.tt-cell {
  width: 14.5%;
  height: 76px;
  padding: 0 !important;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  vertical-align: middle;
  text-align: center;
  transition: transform .15s, box-shadow .2s, border-color .2s;
}
#lecture_table td.tt-cell.is-empty {
  background:
    repeating-linear-gradient(135deg, var(--surface-soft) 0 10px, #fff 10px 20px);
  opacity: .7;
}
#lecture_table td.tt-cell.is-filled {
  background: linear-gradient(160deg, #ffffff 0%, var(--surface-soft) 100%);
  border-color: var(--border-strong) !important;
  border-left: 3px solid var(--accent) !important;
  box-shadow: var(--shadow-1);
}
#lecture_table td.tt-cell.is-filled:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-left-color: var(--primary) !important;
}
#lecture_table td.tt-cell .tt-lec {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  height: 100%;
  padding: 8px 6px;
  text-decoration: none;
}
.tt-lec .tt-lec-name {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.2;
  word-break: break-word;
}
.tt-lec .tt-lec-code {
  font-size: 10px;
  letter-spacing: .04em;
  color: var(--text-mute);
}
.tt-cell:hover .tt-lec-name { color: var(--accent-strong); }

.tt-foot {
  text-align: center;
  margin-top: 18px;
  font-size: 11px;
  color: var(--text-mute);
}

@media (max-width: 720px) {
  #lecture_table { border-spacing: 5px; }
  #lecture_table td.tt-cell { height: 60px; }
  #lecture_table th.tt-corner,
  #lecture_table th.tt-period { width: 60px; }
}

/* ==========================================================================
   User management (root only) — /users
   ========================================================================== */
/* Root-only topbar button */
.yatt-topbar .yatt-nav a.yatt-admin {
  color: #fff;
  background: var(--grad);
  border: 1px solid transparent;
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(0,63,140,0.18), 0 6px 16px rgba(240,131,0,0.18);
}
.yatt-topbar .yatt-nav a.yatt-admin:hover {
  color: #fff;
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.um-head {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 4px;
  text-align: center;
}
.um-head .hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; margin-bottom: 8px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: var(--primary-soft);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px; letter-spacing: .14em; color: var(--primary);
}
.um-head .hero-eyebrow .pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 12px rgba(240,131,0,.7);
  animation: yatt-pulse 2s ease-in-out infinite;
}
.um-title {
  font-family: 'Space Grotesk','Inter',sans-serif;
  font-size: clamp(2rem, 4.4vw, 3rem);
  font-weight: 700; margin: 8px 0 4px;
}
.um-sub { margin: 0; color: var(--text-dim); font-size: 14px; }

.um-notice {
  max-width: 1100px;
  margin: 14px auto 0;
  padding: 12px 18px;
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
  font-size: 14px;
}

/* Create-user form */
.um-create .um-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px 18px;
  margin: 4px 0 18px;
}
.um-create label { display: block; }
.um-create label > span {
  display: block;
  margin: 0 0 6px;
  font-size: 12px; font-weight: 600; color: var(--text-dim);
}
.um-create input, .um-create select {
  width: 100% !important;
  padding: 11px 13px !important;
  min-height: 44px;
  font-size: 14px !important;
  line-height: 1.4 !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 10px !important;
}

/* Users table */
.users-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.users-table thead th {
  background: var(--surface-strong);
  color: var(--text-mute);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  font-weight: 600;
  text-align: left;
  padding: 12px 14px;
  white-space: nowrap;
}
.users-table tbody td {
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  vertical-align: middle;
}
.users-table tbody tr:hover td { background: var(--surface-soft); }
.um-user {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600; color: var(--primary);
}
.um-badge {
  display: inline-block; margin-left: 8px;
  padding: 2px 8px; border-radius: 999px;
  background: var(--grad); color: #fff;
  font-size: 10px; font-weight: 700; letter-spacing: .04em;
  vertical-align: middle;
}
.um-email { color: var(--text-dim); }
.um-date { color: var(--text-mute); font-size: 12px; white-space: nowrap; }

.um-actions { white-space: nowrap; }
.um-inline {
  display: inline-flex; align-items: center; gap: 6px;
  margin: 0 6px 0 0;
}
.um-pw {
  width: 150px !important;
  padding: 7px 10px !important;
  min-height: 34px;
  font-size: 13px !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 8px !important;
}
.um-btn {
  padding: 7px 12px;
  font-size: 12px; font-weight: 600;
  border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.um-btn-pw { color: var(--primary); border-color: var(--border-strong); }
.um-btn-pw:hover { background: var(--primary-soft); border-color: var(--primary); }
.um-btn-del { color: #c0392b; border-color: rgba(192,57,43,.35); }
.um-btn-del:hover { background: rgba(192,57,43,.08); border-color: #c0392b; }
.um-self { color: var(--text-mute); font-size: 12px; }

@media (max-width: 760px) {
  .users-table .um-email, .users-table .um-date { display: none; }
  .um-pw { width: 110px !important; }
}

/* Wider cards for the user-management page (override legacy #wrapper width:940px) */
#wrapper.um-wrap {
  width: auto !important;
  max-width: 1180px;
}

/* Language toggle (JA / EN) in the topbar */
.yatt-langtoggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  overflow: hidden;
  margin-right: 4px;
}
.yatt-langtoggle a {
  padding: 5px 11px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--text-mute);
  background: transparent;
}
.yatt-langtoggle a:hover { color: var(--primary); background: var(--primary-soft); }
.yatt-langtoggle a.is-on {
  color: #fff;
  background: var(--grad);
}

/* ==========================================================================
   Public-pages gallery on the landing — one icon card per user
   ========================================================================== */
.user-gallery {
  max-width: 1100px;
  margin: 8px auto 0;
  padding: 8px 24px 0;
}
.user-gallery-head {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-mute);
  text-align: center;
  margin-bottom: 16px;
}
.user-gallery-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.user-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 116px;
  padding: 18px 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
  box-shadow: var(--shadow-1);
  text-align: center;
  transition: transform .15s, box-shadow .2s, border-color .2s;
}
.user-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--accent);
}
.user-card.is-current {
  border-color: var(--primary);
  border-top: 3px solid var(--accent);
}
.user-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  background: var(--grad);
  box-shadow: 0 0 0 1px rgba(0,63,140,0.15), 0 8px 18px rgba(240,131,0,0.18);
}
.user-card-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: var(--primary);
  word-break: break-word;
}
.user-card-full {
  font-size: 11px;
  color: var(--text-mute);
  line-height: 1.3;
  word-break: break-word;
}

/* Time-table mount: fade slightly while swapping via the gallery */
#timetable-mount { transition: opacity .15s; }
#timetable-mount.is-loading { opacity: .4; }
.user-card { cursor: pointer; }

/* Create-account form: match the taller sign-in inputs */
#account-form input[type='text'],
#account-form input[type='password'],
#account-form input[type='email'],
#account-form select#country-list,
#account-form select {
  min-height: 46px;
  height: auto !important;
  padding: 13px 14px !important;
  font-size: 15px !important;
  line-height: 1.5 !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 12px !important;
  box-sizing: border-box;
}
#account-form .control-group { margin-bottom: 14px; }
#account-form .control-label { padding-top: 12px; font-weight: 600; color: var(--text-dim); }

/* Status/flash message cell (e.g. "New User:root") — a touch larger */
td[style*='color:red'] {
  font-size: 1.15rem !important;
  font-weight: 600;
  line-height: 1.4;
}

/* ==========================================================================
   Left admin menu (root only) — a vertical bar built to hold several items
   ========================================================================== */
.yatt-sidebar {
  position: fixed;
  top: 84px;
  left: 18px;
  z-index: 40;
  width: 190px;
  padding: 14px 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
}
.yatt-sidebar-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-mute);
  padding: 2px 8px 10px;
}
.yatt-sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  border: 1px solid transparent;
  transition: all .18s;
}
.yatt-sidebar-item:hover {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: var(--border);
}
.yatt-sidebar-item.is-active {
  color: #fff;
  background: var(--grad);
  border-color: transparent;
  box-shadow: 0 0 0 1px rgba(0,63,140,0.15), 0 6px 16px rgba(240,131,0,0.18);
}
.yatt-sidebar-ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Narrow screens: the fixed left bar would overlap content, so dock it as a
   horizontal strip right under the topbar instead. */
@media (max-width: 1180px) {
  .yatt-sidebar {
    position: static;
    width: auto;
    margin: 12px 16px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
  }
  .yatt-sidebar-title { padding: 0 6px 0 0; }
  .yatt-sidebar-item { padding: 7px 12px; }
}

/* ==========================================================================
   Lecture / clayout editor — modernise the legacy orange-table layout
   ========================================================================== */
/* Title textarea + lecture code */
#title, #Code {
  display: inline-block;
  font-family: 'Space Grotesk', 'Inter', sans-serif !important;
  font-size: 1.7rem !important;
  font-weight: 700 !important;
  line-height: 1.3 !important;
  text-align: center;
  color: var(--primary) !important;
  padding: 12px 16px !important;
  min-width: 280px;
  width: auto;
  height: auto !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 14px !important;
  background: var(--surface) !important;
  vertical-align: middle;
  resize: none;
}
div[align='center'][style*='font-size:4.5em'] span {
  font-family: 'Space Grotesk', sans-serif !important;
  color: var(--text-mute) !important;
  font-size: 1.2rem !important;
  vertical-align: middle;
}

/* Two-column editor table */
#ltable { border-collapse: separate !important; border-spacing: 18px 0 !important; }
#ltable > tbody > tr > td.leftside,
#ltable td.leftside, #ltable td.leftside2 {
  background: linear-gradient(180deg, #ffffff, var(--surface-soft)) !important;
  border: 1px solid var(--border) !important;
  border-top: 3px solid var(--accent) !important;
  border-radius: var(--radius-lg) !important;
  padding: 18px 22px !important;
  vertical-align: top;
  width: 42%;
}
#ltable h2 {
  font-family: 'Space Grotesk', 'Noto Sans JP', sans-serif !important;
  font-size: 1rem !important;
  letter-spacing: .02em;
  margin: 16px 0 6px !important;
}
#ltable h2:first-child { margin-top: 0 !important; }
#ltable h2 font, #ltable font[color] { color: var(--primary) !important; }
#ltable .leftside img[src*='redtri'], #ltable .leftside2 img[src*='redtri'] { display: none; }
#ltable textarea {
  display: block;
  width: 100% !important;
  min-height: 64px;
  margin-top: 4px;
  padding: 11px 13px !important;
  font-family: 'Inter', 'Noto Sans JP', sans-serif !important;
  font-size: 14px !important;
  line-height: 1.5 !important;
  color: var(--text) !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 10px !important;
  background: var(--surface) !important;
  resize: vertical;
}

/* Right column: groups → class items */
#ltable td[valign='top'] > table { width: 100% !important; }
td.righttitle2 {
  background: var(--surface-strong) !important;
  color: var(--primary) !important;
  font-family: 'Space Grotesk', sans-serif !important;
  font-size: .95rem !important;
  font-weight: 700 !important;
  letter-spacing: .02em;
  border: 1px solid var(--border) !important;
  border-left: 3px solid var(--accent) !important;
  border-radius: 10px 10px 0 0 !important;
  padding: 10px 14px !important;
}
td.rightcontents2 {
  background: var(--surface) !important;
  color: var(--primary) !important;
  border: 1px solid var(--border) !important;
  border-top: 0 !important;
  padding: 9px 14px !important;
  line-height: 1.6 !important;
}
td.rightcontents2 img[src*='redtri'] { display: none; }
td.rightcontents2 a { color: var(--primary) !important; font-weight: 600; }
td.rightcontents2 a:hover { color: var(--accent) !important; }

/* ==========================================================================
   Read-only content view (citem) — guests / non-owners cannot edit
   ========================================================================== */
.is-readonly .open-ContentsGroup,
.is-readonly .bbutton,
.is-readonly #btn-logout2,
.is-readonly .icon-trash,
.is-readonly .open-LayoutGroup,
.is-readonly td.righttitle2:has(input[type='radio']),
.is-readonly label.radio input[type='radio'] {
  display: none !important;
}
/* Read-only textareas render as plain, non-interactive text */
.is-readonly textarea[readonly] {
  border: 1px solid var(--border) !important;
  background: var(--surface-soft) !important;
  color: var(--text) !important;
  cursor: default;
  resize: none;
  box-shadow: none !important;
}
.is-readonly textarea[readonly]:focus { outline: none !important; box-shadow: none !important; }