:root{
  --bg: #08111d;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #f28c28;
  --primary-dark: #ee7f17;
  --border: #e5e7eb;
  --ring: rgba(242, 140, 40, .18);
  --error: #b42318;
  --error-border: #fda29b;
  --error-bg: #fef3f2;
  --success: #027a48;
  --success-border: #a6f4c5;
  --success-bg: #ecfdf3;
  --info: #175cd3;
  --info-border: #b2ddff;
  --info-bg: #eff8ff;
  --loading-bg: #eff6ff;
  --brand-navy: #0b1322;
  --brand-navy-2: #111c31;
  --brand-grid: rgba(255,255,255,.045);
  --accent-soft: #fff3d9;
  --panel-soft: rgba(255,255,255,.96);
  --radius: 16px;
  --shadow: 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-strong: 0 12px 36px rgba(15, 23, 42, .10);
}

*{
  box-sizing: border-box;
}

html,
body{
  height: 100%;
  margin: 0;
  font-family: "Noto Sans Thai", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background:
    linear-gradient(180deg, #0a1220 0%, #102038 34%, #20314b 58%, #eef3f9 100%);
  color: var(--text);
  line-height: 1.5;
}

body{
  position: relative;
}

body::before{
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: min(72vh, 780px);
  pointer-events: none;
  background-image:
    linear-gradient(var(--brand-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--brand-grid) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.48) 0%, rgba(0,0,0,.18) 48%, transparent 100%);
  opacity: .26;
}

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

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

.container{
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card{
  width: 100%;
  max-width: 460px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

h1{
  margin: 0 0 8px 0;
  font-weight: 700;
  letter-spacing: .2px;
}

.muted{
  color: var(--muted);
  margin: 0 0 20px 0;
  font-size: 14px;
}

/* ---------- form พื้นฐาน ---------- */
.login-form label{
  display: block;
  margin: 12px 0 6px;
  font-size: 14px;
  color: #334155;
}

.login-form input{
  width: 100%;
  height: 44px;
  padding: 10px 14px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.login-form input::placeholder{
  color: #94a3b8;
}

.login-form input:focus{
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--ring);
}

.login-form input[aria-invalid="true"]{
  border-color: var(--error-border);
  box-shadow: 0 0 0 4px rgba(217, 45, 32, .10);
}

.btn{
  width: 100%;
  margin-top: 16px;
  height: 44px;
  padding: 0 14px;
  background: var(--primary);
  color: #fff;
  border: 0;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .04s ease, box-shadow .15s ease, background-color .15s ease, opacity .15s ease;
  box-shadow: 0 2px 10px rgba(37, 99, 235, .18);
}

.btn:hover{
  background: var(--primary-dark);
}

.btn:active{
  transform: translateY(1px);
}

.btn[disabled]{
  cursor: not-allowed;
  opacity: .5;
  box-shadow: none;
}

.hint{
  color: var(--muted);
  font-size: 12px;
  margin-top: 8px;
}

.health{
  margin-top: 16px;
  font-size: 13px;
  color: #16a34a;
}

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

a:hover{
  text-decoration: underline;
}

/* =========================================================
   Login Page
========================================================= */
.login-page{
  min-height: 100dvh;
  padding: 34px 22px 44px;
  background:
    linear-gradient(180deg, rgba(8,17,29,.14), rgba(8,17,29,0) 22%),
    linear-gradient(135deg, rgba(242,140,40,.06), transparent 26%),
    radial-gradient(960px 420px at 18% 6%, rgba(242,140,40,.09), transparent 52%),
    radial-gradient(960px 520px at 82% 8%, rgba(255,255,255,.12), transparent 56%);
}

.login-shell{
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
  position: relative;
}

.login-info,
.login-panel{
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,.16);
  box-shadow: 0 18px 42px rgba(8, 15, 28, 0.16);
  height: 100%;
}

.login-info{
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 0;
  background:
    linear-gradient(180deg, rgba(18, 31, 52, 0.88), rgba(31, 49, 78, 0.84));
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.login-info::after{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(135deg, rgba(242,140,40,.12), transparent 32%),
    linear-gradient(180deg, rgba(255,255,255,.03), transparent 34%);
}

.login-brand{
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.login-brand-logo{
  width: 72px;
  height: 72px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff, #eef2f7);
  border: 1px solid rgba(255,255,255,.12);
  padding: 8px;
  box-shadow: 0 16px 32px rgba(0,0,0,.18);
  object-fit: cover;
  object-position: 46% 32%;
}

.login-brand-logo[data-logo-group="university"]{
  object-fit: contain;
  object-position: center;
  background: #ffffff;
}

.login-brand-copy{
  display: grid;
  gap: 4px;
}

.login-brand-copy span{
  color: #f2c94c;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .04em;
}

.login-brand-copy strong{
  color: #ffffff;
  font-size: 17px;
  line-height: 1.35;
}

.login-badge{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(242,140,40,.12);
  border: 1px solid rgba(242,140,40,.28);
  color: #ffe3b6;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .04em;
}

.login-info h1{
  margin: 16px 0 10px;
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  max-width: none;
  white-space: nowrap;
}

.login-info p{
  margin: 0;
  color: rgba(255,255,255,.74);
  font-size: 14px;
  line-height: 1.65;
  max-width: 52ch;
}

.login-info-actions{
  margin-top: 0;
}

.login-highlight{
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.login-highlight-item{
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 13px 15px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.085), rgba(255,255,255,.04));
  position: relative;
  overflow: hidden;
}

.login-highlight-item::before{
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  border-radius: 20px 0 0 20px;
  background: linear-gradient(180deg, var(--primary), #f2c94c);
}

.login-highlight-index{
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.08);
  color: #ffffff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  border: 1px solid rgba(255,255,255,.08);
}

.login-highlight-text strong{
  display: block;
  margin-bottom: 3px;
  font-size: 14px;
  color: #ffffff;
}

.login-highlight-text{
  min-width: 0;
}

.login-highlight-text span{
  color: rgba(255,255,255,.7);
  font-size: 12px;
  line-height: 1.45;
}

.login-footer-note{
  margin-top: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.10);
  color: rgba(255,255,255,.65);
  font-size: 13px;
}

.login-info-bottom{
  display: grid;
  gap: 14px;
}

.login-panel{
  display: flex;
  padding: 28px 28px 24px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.93), rgba(245,248,252,.92));
  position: relative;
  overflow: hidden;
}

.login-panel::before{
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, #f2c94c, #f28c28, #ee7f17);
}

.login-panel-inner{
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  min-height: 100%;
  position: relative;
  z-index: 1;
}

.login-panel-head{
  display: grid;
  align-items: start;
  justify-items: start;
  margin-bottom: 24px;
  gap: 0;
}

.login-panel-head .eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(242,140,40,.10);
  border: 1px solid rgba(242,140,40,.18);
  color: #ad5b13;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .02em;
}

.login-panel-head h2{
  margin: 0 0 10px;
  font-size: 30px;
  line-height: 1.12;
  letter-spacing: -.02em;
}

.login-panel-head p{
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.login-form{
  display: grid;
  gap: 14px;
}

.field-group{
  display: grid;
  gap: 6px;
}

.field-group label{
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: #243043;
}

.login-form-links{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 16px;
  margin-top: 2px;
}

.login-secondary-link{
  font-size: 13px;
  font-weight: 800;
  color: #1d4ed8;
  text-decoration: none;
  white-space: nowrap;
}

.login-secondary-link:hover,
.login-secondary-link:focus-visible{
  text-decoration: underline;
}

.login-form .btn{
  margin-top: 8px;
  height: 52px;
  font-size: 16px;
  font-weight: 900;
  color: #1b1306;
  background: linear-gradient(135deg, #f2c94c, #f28c28);
  border: 1px solid rgba(242,140,40,.18);
  box-shadow: 0 16px 34px rgba(242,140,40,.22);
}

.login-form .btn:hover{
  background: linear-gradient(135deg, #f0bf3c, #ee7f17);
}

.login-msg-wrap{
  min-height: 74px;
  display: flex;
  align-items: flex-start;
}

.login-status{
  width: 100%;
  margin: 0;
  padding: 13px 15px;
  border-radius: 18px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity .15s ease, transform .15s ease, background-color .15s ease, border-color .15s ease;
}

.login-status:not(:empty){
  opacity: 1;
  transform: translateY(0);
}

.login-status[data-state="error"]{
  color: var(--error);
  background: var(--error-bg);
  border-color: var(--error-border);
}

.login-status[data-state="success"]{
  color: var(--success);
  background: var(--success-bg);
  border-color: var(--success-border);
}

.login-status[data-state="info"]{
  color: var(--info);
  background: var(--info-bg);
  border-color: var(--info-border);
}

.login-status[data-state="loading"]{
  color: var(--info);
  background: var(--loading-bg);
  border-color: rgba(59, 130, 246, 0.25);
}

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

.login-help strong{
  color: var(--text);
}

.login-support{
  display: grid;
  gap: 10px;
  margin-top: auto;
  padding-top: 12px;
}

.login-help-primary{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(245,247,250,.96), rgba(255,255,255,.96));
  border: 1px solid rgba(226,232,240,.92);
}

.login-help-primary a{
  color: #1d4ed8;
  font-weight: 800;
}

.login-help-note{
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(248,250,252,.82);
  border: 1px solid rgba(226,232,240,.86);
  color: #6b7280;
  line-height: 1.6;
}

.login-mobile-cta{
  display: none;
  appearance: none;
  -webkit-appearance: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(242,140,40,.24);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  color: #fff2d8;
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(0,0,0,.14);
  cursor: pointer;
}

.login-mobile-cta:hover,
.login-mobile-cta:focus-visible{
  text-decoration: none;
  border-color: rgba(242,140,40,.40);
  background: linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.05));
}

.login-back-mobile{
  display: none;
  appearance: none;
  -webkit-appearance: none;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  margin-top: 12px;
  padding: 0 14px;
  border: 1px solid rgba(29, 78, 216, .16);
  border-radius: 999px;
  background: rgba(255,255,255,.78);
  color: #1d4ed8;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(15, 23, 42, .08);
}

.login-back-mobile:hover,
.login-back-mobile:focus-visible{
  background: rgba(255,255,255,.96);
}

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 960px){
  .login-shell{
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .login-info{
    min-height: auto;
  }

  .login-info h1{
    max-width: none;
  }
}

@media (max-width: 640px){
  .container{
    padding: 0;
  }

  .card{
    padding: 20px;
  }

  .login-page{
    display: block;
    padding: 14px 0 22px;
    overflow-x: hidden;
  }

  .login-shell{
    width: 100vw;
    max-width: 100vw;
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 100vw;
    gap: 0;
    padding: 0;
    overflow-x: auto;
    overflow-y: visible;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    align-items: stretch;
  }

  .login-shell::-webkit-scrollbar{
    display: none;
  }

  .login-info,
  .login-panel{
    width: 100vw;
    min-width: 100vw;
    max-width: 100vw;
    border-radius: 24px;
    scroll-snap-align: start;
  }

  .login-info{
    order: 0;
    min-height: auto;
    padding: 22px 28px;
  }

  .login-panel{
    order: 0;
    padding: 22px 28px 18px;
  }

  .login-panel-head h2{
    font-size: 28px;
  }

  .login-info h1{
    font-size: 1.56rem;
    max-width: none;
    white-space: nowrap;
  }

  .login-info p{
    max-width: none;
    font-size: 13px;
    line-height: 1.55;
  }

  .login-brand{
    gap: 14px;
    margin-bottom: 18px;
  }

  .login-brand-logo{
    width: 60px;
    height: 60px;
    border-radius: 18px;
  }

  .login-brand-copy strong{
    font-size: 16px;
  }

  .login-highlight{
    gap: 10px;
  }

  .login-highlight-item{
    padding: 12px 14px;
  }

  .login-info-bottom{
    gap: 12px;
    padding-top: 4px;
  }

  .login-mobile-cta{
    display: inline-flex;
    width: 100%;
    justify-content: center;
  }

  .login-back-mobile{
    display: inline-flex;
  }

  .login-form input{
    height: 48px;
  }

  .login-form .btn{
    height: 50px;
  }

  .login-msg-wrap{
    min-height: 72px;
  }

  .login-help-primary{
    align-items: flex-start;
    flex-direction: column;
  }
}