/* Giao diện chung hệ thống đăng nhập tập trung - Sở GDĐT TP.HCM */
/* Phong cách: Google Enterprise Minimalist */
:root {
  --xanh: #1B4F9C;          /* Xanh nhận diện Sở GDĐT TP.HCM */
  --xanh-dam: #123A75;
  --xanh-nhat: #EDF3FC;
  --do: #D32F2F;
  --vang: #F4C430;
  --muc: #1E293B;           /* Slate 800 - màu chữ hiện đại, rõ nét */
  --phu: #64748B;           /* Slate 500 - màu phụ */
  --vien: #E2E8F0;          /* Slate 200 - viền nhẹ tinh tế */
  --nen: #F8FAFC;           /* Nền xám xanh sáng */
  --giay: #FFFFFF;
  --loi: #DC2626; --loi-nen: #FEF2F2; --loi-vien: #FCA5A5;
  --ok: #16A34A;  --ok-nen: #F0FDF4;  --ok-vien: #86EFAC;
  --bong: 0 1px 3px 0 rgba(0, 0, 0, 0.02), 0 20px 40px -15px rgba(27, 79, 156, 0.08);
  --bo: 20px;
  /* Màu nhận diện Google */
  --g-xanh: #4285F4; --g-do: #EA4335; --g-vang: #FBBC05; --g-la: #34A853;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  display: flex; flex-direction: column; min-height: 100vh;
  color: var(--muc);
  font: 15px/1.55 "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background:
    radial-gradient(1000px 520px at 50% 0%, #DCEAFC 0%, #EDF3FA 55%, #E2E8F0 100%);
  -webkit-font-smoothing: antialiased;
}

/* Dải màu nhận diện Google trên cùng */
.dai-mau {
  height: 4px;
  background: linear-gradient(90deg,
    var(--g-xanh) 0 25%, var(--g-do) 25% 50%, var(--g-vang) 50% 75%, var(--g-la) 75% 100%);
}

.khung {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 32px 16px 28px;
}

.the {
  width: 100%;
  max-width: 440px;
  background: var(--giay);
  border-radius: var(--bo);
  border: 1.5px solid #CBD5E1;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 20px 40px -10px rgba(18, 58, 117, 0.12);
  padding: 34px 34px 30px;
  animation: hien .4s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.the.rong { max-width: 500px; }

@keyframes hien {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* Đầu trang: Lockup ngang logo + tên đơn vị */
.dau-trang {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid #F1F5F9;
}
.logo {
  flex: none;
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: drop-shadow(0 2px 5px rgba(18, 58, 117, .12));
}
.nhan-dien-don-vi {
  text-align: left;
}
.ten-so {
  margin: 0;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--phu);
}
.ten-tp {
  margin: 1px 0 0;
  font-size: .9375rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--xanh);
}

h1 {
  margin: 0 0 6px;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  color: var(--muc);
}

/* Tiêu đề HCMEDU SSO một màu xanh, chữ O 4 màu nhận diện Google */
.tieu-de-sso {
  margin: 0 0 6px;
  font-size: 1.625rem;
  font-weight: 800;
  letter-spacing: .02em;
  text-align: center;
  color: var(--xanh);
}
.chu-o-google {
  display: inline-block;
  background: conic-gradient(from 0deg,
    #4285F4 0deg 89.5deg,
    #34A853 90.5deg 179.5deg,
    #FBBC05 180.5deg 269.5deg,
    #EA4335 270.5deg 359.5deg,
    #4285F4 360deg);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mo-ta {
  margin: 0 0 24px;
  color: var(--phu);
  font-size: .875rem;
  text-align: center;
  line-height: 1.5;
}

/* Form */
.truong {
  margin-bottom: 18px;
}
label {
  display: block;
  font-weight: 600;
  font-size: .8125rem;
  margin-bottom: 6px;
  color: var(--muc);
}
.o-nhap {
  position: relative;
  display: flex;
  align-items: center;
}
.o-nhap-icon {
  position: absolute;
  left: 14px;
  color: #64748B;
  pointer-events: none;
  transition: color .15s ease;
}
.o-nhap:focus-within .o-nhap-icon {
  color: var(--xanh);
}

input[type=text], input[type=password] {
  width: 100%;
  padding: 12px 14px 12px 42px;
  font: inherit;
  font-size: .9375rem;
  color: var(--muc);
  background: #F8FAFC;
  border: 1.5px solid #94A3B8;
  border-radius: 12px;
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
}
input[type=text]::placeholder, input[type=password]::placeholder {
  color: #64748B;
  font-size: .875rem;
}
input[type=text]:hover, input[type=password]:hover {
  border-color: #475569;
  background: #FFFFFF;
}
input[type=text]:focus, input[type=password]:focus {
  outline: none;
  background: #FFFFFF;
  border-color: var(--xanh);
  box-shadow: 0 0 0 4px rgba(27, 79, 156, .16);
}
.o-nhap input[type=password], .o-nhap input.mk {
  padding-right: 74px;
}

.hien-mk {
  position: absolute;
  right: 8px;
  padding: 5px 10px;
  font: inherit;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--xanh);
  background: var(--xanh-nhat);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.hien-mk:hover {
  background: #D8E4F8;
}

.nut {
  display: block;
  width: 100%;
  padding: 13px 20px;
  margin-top: 8px;
  font: inherit;
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .01em;
  color: #FFFFFF;
  text-align: center;
  text-decoration: none;
  background: var(--xanh);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 12px -2px rgba(27, 79, 156, .35);
  transition: background-color .15s ease, transform .12s ease, box-shadow .15s ease;
}
.nut:hover {
  background: var(--xanh-dam);
  box-shadow: 0 6px 16px -2px rgba(27, 79, 156, .45);
  transform: translateY(-1px);
}
.nut:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px -1px rgba(27, 79, 156, .3);
}
.nut.phu {
  color: var(--xanh);
  background: var(--xanh-nhat);
  box-shadow: none;
}
.nut.phu:hover {
  background: #D8E4F8;
  transform: none;
}
button:focus-visible, a:focus-visible {
  outline: 3px solid #7FA7D6;
  outline-offset: 2px;
}

/* Thông báo */
.tb {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  margin: 0 0 20px;
  border-radius: 10px;
  font-size: .875rem;
  line-height: 1.45;
}
.tb::before { flex: none; font-weight: 700; }
.tb.loi {
  background: var(--loi-nen);
  color: var(--loi);
  border: 1px solid var(--loi-vien);
}
.tb.loi::before { content: "!"; }
.tb.ok {
  background: var(--ok-nen);
  color: var(--ok);
  border: 1px solid var(--ok-vien);
}
.tb.ok::before { content: "✓"; }
.tb.canh {
  background: #FFFBEB;
  color: #92400E;
  border: 1px solid #FCD34D;
}
.tb.canh::before { content: "i"; font-style: italic; }

/* Trang "Bạn đã đăng nhập" (tài khoản chưa liên kết email) */
.dau-xong {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  color: #FFFFFF;
  background: linear-gradient(135deg, #22C55E 0%, var(--ok) 100%);
  border-radius: 50%;
  box-shadow: 0 10px 24px -8px rgba(22, 163, 74, .55);
  animation: hien .4s cubic-bezier(0.16, 1, 0.3, 1) .1s both;
}
.thong-tin-tk {
  margin: 0 0 18px;
  padding: 4px 16px;
  background: #F8FAFC;
  border: 1.5px solid var(--vien);
  border-radius: 14px;
}
.thong-tin-tk div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  font-size: .875rem;
}
.thong-tin-tk div + div { border-top: 1px solid var(--vien); }
.thong-tin-tk dt { flex: none; color: var(--phu); }
.thong-tin-tk dd { margin: 0; font-weight: 600; text-align: right; overflow-wrap: anywhere; }
.thong-tin-tk dd span { display: block; font-size: .78rem; font-weight: 400; color: var(--phu); }

.ghi-chu {
  margin: 20px 0 0;
  color: var(--phu);
  font-size: .8125rem;
  text-align: center;
  line-height: 1.45;
}
code { background: #F1F5F9; padding: 2px 6px; border-radius: 4px; font-size: .875em; }
[hidden] { display: none !important; }
.ghi-chu.sat { margin-top: 0; }
.nut.ve-trang-chu { margin-top: 20px; }

/* Ô ID tự điền từ email Google: chỉ đọc */
input.khoa, input.khoa:hover { background: #F8FAFC; border-color: var(--vien); color: var(--phu); cursor: default; }
input.khoa:focus { box-shadow: none; border-color: var(--vien); }

.nut:disabled { opacity: .7; cursor: progress; }

/* Trang chọn loại tài khoản (/) */
.chon-loai { display: grid; gap: 12px; }
.o-chon {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  color: var(--muc);
  text-decoration: none;
  background: #F8FAFC;
  border: 1.5px solid #CBD5E1;
  border-radius: 14px;
  transition: border-color .15s ease, background-color .15s ease, transform .12s ease, box-shadow .15s ease;
}
.o-chon:hover {
  background: var(--giay);
  border-color: var(--xanh);
  box-shadow: 0 8px 20px -10px rgba(27, 79, 156, .45);
  transform: translateY(-1px);
}
.o-chon-icon {
  flex: none;
  padding: 9px;
  width: 44px;
  height: 44px;
  color: var(--xanh);
  background: var(--xanh-nhat);
  border-radius: 12px;
}
.o-chon-chu { display: flex; flex-direction: column; line-height: 1.35; }
.o-chon-chu strong { font-size: .9688rem; }
.o-chon-chu span { color: var(--phu); font-size: .8125rem; }

/* Nhãn loại tài khoản + mã trường trên trang đăng nhập */
.loai-tk {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: -12px 0 20px;
  font-size: .8125rem;
}
.nhan-loai, .ma-truong {
  padding: 3px 12px;
  border-radius: 999px;
  font-weight: 600;
}
.nhan-loai { color: var(--xanh); background: var(--xanh-nhat); }
.ma-truong { color: var(--phu); background: #F1F5F9; }
.lien-ket { color: var(--xanh); font-weight: 600; text-decoration: none; }
.lien-ket:hover { text-decoration: underline; }
@media (prefers-reduced-motion: reduce) { .o-chon { transition: none; } }

/* Chỉ báo bước trên trang "/" */
.buoc {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: -10px 0 22px;
  padding: 0;
  list-style: none;
  font-size: .78rem;
  font-weight: 600;
  color: var(--phu);
}
.buoc-muc {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 12px 4px 4px;
  background: #F1F5F9;
  border-radius: 999px;
}
.buoc-muc span {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  font-size: .7rem;
  color: var(--phu);
  background: var(--giay);
  border-radius: 50%;
}
.buoc-muc.dang { color: var(--xanh); background: var(--xanh-nhat); }
.buoc-muc.dang span { color: #FFFFFF; background: var(--xanh); }
.buoc-muc.xong { color: var(--ok); background: var(--ok-nen); }
.buoc-muc.xong span { color: #FFFFFF; background: var(--ok); }

/* Bước 1: ô tìm trường + danh sách gợi ý */
.chon-truong .truong { margin-bottom: 8px; }
.goi-y {
  position: absolute;
  z-index: 10;
  left: 0;
  right: 0;
  top: calc(100% + 6px);
  max-height: 340px;
  margin: 0;
  padding: 6px;
  overflow-y: auto;
  list-style: none;
  background: var(--giay);
  border: 1.5px solid #CBD5E1;
  border-radius: 14px;
  box-shadow: 0 18px 40px -12px rgba(18, 58, 117, .28);
  animation: hien .18s ease-out both;
}
.goi-y-muc {
  display: grid;
  grid-template-columns: 1fr auto;
  column-gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  cursor: pointer;
}
.goi-y-muc strong { grid-column: 1; font-size: .875rem; font-weight: 600; color: var(--muc); }
.goi-y-muc span { grid-column: 1; font-size: .78rem; color: var(--phu); line-height: 1.4; }
.goi-y-muc small {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  padding: 2px 8px;
  font-size: .7rem;
  font-weight: 600;
  color: var(--phu);
  background: #F1F5F9;
  border-radius: 999px;
}
.goi-y-muc + .goi-y-muc { margin-top: 2px; }
.goi-y-muc[aria-selected="true"] { background: var(--xanh-nhat); }
.goi-y-muc[aria-selected="true"] strong { color: var(--xanh); }
.goi-y-trang-thai {
  min-height: 1.2em;
  margin: 8px 2px 0;
  font-size: .78rem;
  color: var(--phu);
  line-height: 1.45;
}
.goi-y-trang-thai em { font-style: normal; font-weight: 600; color: var(--muc); }

.gan-day {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  padding: 12px 14px;
  color: var(--xanh);
  text-decoration: none;
  background: var(--xanh-nhat);
  border: 1.5px dashed #A9C2EA;
  border-radius: 12px;
  transition: background-color .15s ease, border-color .15s ease, transform .12s ease;
}
.gan-day:hover { background: #E1EBFA; border-color: var(--xanh); transform: translateY(-1px); }
.gan-day svg { flex: none; }
.gan-day-chu { display: flex; flex-direction: column; min-width: 0; line-height: 1.35; }
.gan-day-chu small { font-size: .7rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--phu); }
.gan-day-chu strong { font-size: .875rem; color: var(--muc); }
.gan-day-chu span { font-size: .78rem; color: var(--phu); }

/* Bước 2: thẻ trường đã chọn */
.truong-da-chon {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  padding: 12px 14px;
  background: linear-gradient(135deg, #F8FBFF 0%, var(--xanh-nhat) 100%);
  border: 1.5px solid #C9D9F2;
  border-radius: 14px;
}
.truong-da-chon-icon {
  flex: none;
  padding: 8px;
  width: 38px;
  height: 38px;
  color: #FFFFFF;
  background: var(--xanh);
  border-radius: 10px;
}
.truong-da-chon-chu { flex: 1; display: flex; flex-direction: column; min-width: 0; line-height: 1.35; }
.truong-da-chon-chu strong { font-size: .9rem; }
.truong-da-chon-chu span { font-size: .78rem; color: var(--phu); }
.doi-truong { flex: none; font-size: .8rem; }
@media (prefers-reduced-motion: reduce) { .goi-y, .gan-day { animation: none; transition: none; } }

/* Chân trang */
.chan-trang {
  text-align: center;
  color: var(--phu);
  font-size: .8125rem;
  padding: 0 16px 28px;
}
.chan-trang p { margin: 3px 0; font-size: .775rem; }
.chan-trang-google { margin-bottom: 14px; }
.google-oauth-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--giay);
  border: 1px solid var(--vien);
  border-radius: 999px;
  color: var(--phu);
  font-size: .8125rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .03);
  cursor: default;
  user-select: none;
}
.google-oauth-badge strong {
  color: var(--muc);
  font-weight: 600;
}
.google-icon {
  flex: none;
  display: block;
}

@media (max-width: 480px) {
  .khung { padding: 20px 14px 20px; }
  .the { padding: 28px 22px 24px; border-radius: 16px; }
  .dau-trang { gap: 12px; margin-bottom: 18px; padding-bottom: 16px; }
  .logo { width: 42px; height: 42px; }
  .tieu-de-sso { font-size: 1.45rem; }
  input[type=text], input[type=password] { padding: 11px 12px 11px 38px; font-size: .875rem; }
  .o-nhap-icon { left: 12px; width: 16px; height: 16px; }
}
@media (prefers-reduced-motion: reduce) { .the { animation: none; } }