/* =========================================================================
   auth.css — TRANG DANG NHAP / DANG KY / HO SO
   Dung chung cho login.html, register.html, account.html.
   ========================================================================= */

/* ── Khung trang ────────────────────────────────────────────
   Hai cot: cot chu gioi thieu ben trai, o nhap lieu ben phai.
   Man hinh hep thi bo cot trai di — no chi de trang trong. */
.auth {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 520px);
  align-items: stretch;
}
@media (max-width: 940px) {
  .auth { grid-template-columns: 1fr; }
  .auth__side { display: none; }
}

.auth__side {
  position: relative;
  overflow: hidden;
  background: var(--surface-2);
  border-right: var(--hair) solid var(--border);
  display: grid;
  align-content: center;
  padding: clamp(32px, 5vw, 72px);
}
.auth__side .container { padding: 0; }

.auth__main {
  display: grid;
  align-content: center;
  padding: clamp(28px, 5vw, 56px) clamp(20px, 5vw, 52px);
  background: var(--surface);
}

/* ── The o nhap lieu ────────────────────────────────────── */
.auth__card { width: 100%; max-width: 420px; margin-inline: auto; }
.auth__card h1 { font-size: clamp(1.6rem, 3vw, 2rem); margin-bottom: .3em; }
.auth__card .sec-lead { font-size: var(--fs-body); margin-bottom: 28px; }

/* ── O nhap ─────────────────────────────────────────────── */
.field { display: grid; gap: 7px; margin-bottom: 16px; }
.field > label {
  font-size: var(--fs-xs);
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: var(--fs-sm);
  color: var(--text);
  background: var(--card);
  border: var(--hair) solid var(--border-strong);
  border-radius: 4px;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.field textarea { min-height: 96px; resize: vertical; line-height: 1.55; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-faint); }

/* O mat khau: chua nut hien/an ben phai. */
.field--pass { position: relative; }
.field--pass input { padding-right: 46px; }
.field__eye {
  position: absolute;
  right: 6px; bottom: 6px;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border: 0; border-radius: 4px;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
}
.field__eye:hover { color: var(--accent); background: var(--surface-3); }

.field__hint { font-size: var(--fs-xs); color: var(--text-faint); }

/* Do manh mat khau: 4 vach, js/auth.js gan .is-on cho tung vach. */
.pwbar { display: flex; gap: 5px; margin-top: 3px; }
.pwbar i {
  height: 4px; flex: 1;
  border-radius: 2px;
  background: var(--border);
  transition: background-color var(--dur) var(--ease);
}
.pwbar i.is-on { background: var(--warn); }
.pwbar.is-good i.is-on { background: var(--ok); }

/* Dong dieu kien / ghi nho dang nhap. */
.check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-bottom: 18px;
}
.check input { margin-top: 3px; accent-color: var(--accent-solid); }

.auth__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  font-size: var(--fs-sm);
}

.auth__foot {
  margin-top: 22px;
  padding-top: 18px;
  border-top: var(--hair) solid var(--border);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  text-align: center;
}

/* ── Bao loi / bao thanh cong ───────────────────────────── */
/* An san, js them .is-on khi co gi de noi. aria-live o HTML lo phan doc man hinh. */
.note {
  display: none;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: 4px;
  font-size: var(--fs-sm);
  margin-bottom: 16px;
  border: var(--hair) solid transparent;
}
.note.is-on { display: flex; }
.note--err {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  border-color: color-mix(in srgb, var(--danger) 40%, transparent);
  color: var(--danger);
}
.note--ok {
  background: color-mix(in srgb, var(--ok) 12%, transparent);
  border-color: color-mix(in srgb, var(--ok) 38%, transparent);
  color: var(--ok);
}
.note--warn {
  background: color-mix(in srgb, var(--warn) 14%, transparent);
  border-color: color-mix(in srgb, var(--warn) 42%, transparent);
  color: var(--text);
}

/* ── Thanh dau trang gon cho cac trang trong ────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px clamp(16px, 4vw, 28px);
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px);
          backdrop-filter: blur(12px);
  border-bottom: var(--hair) solid var(--border);
}
.topbar .brand { margin-right: auto; }
.topbar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-sm);
}
.avatar {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 5px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 750;
  font-family: var(--font-mono);
  flex: none;
}
.avatar--lg { width: 60px; height: 60px; font-size: 1.3rem; border-radius: 6px; }

/* Avatar dạng ảnh trong góc nav — đè lên chữ tắt tên. */
.avatar--img { padding: 0; overflow: hidden; }
.avatar--img img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block; }