/* ==========================================================================
   University of Dhaka — Student Portal login
   Classic, restrained institutional style (Oxford / MIT register):
   flat surfaces, serif display type, one accent rule, no patterns.
   Scoped to .du-login-page.
   ========================================================================== */

.du-login-body {
    margin: 0;
    font-family: 'Noto Sans Bengali', 'Hind Siliguri', 'SolaimanLipi', 'Segoe UI', Arial, sans-serif;
}

.du-login-page {
    --du-navy: #0a2a52;
    --du-navy-deep: #061b39;
    --du-gold: #b9882b;
    --du-ink: #1b2433;
    --du-body: #50596b;
    --du-line: #dcdfe4;
    --du-surface: #eceef1;

    min-height: 100vh;
    padding: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    background: #eceef1;
    color: var(--du-ink);
    font-family: inherit;
    -webkit-font-smoothing: antialiased;
}

.du-login-page *,
.du-login-page *::before,
.du-login-page *::after {
    box-sizing: border-box;
}

.du-login-wrap {
    width: 100%;
    max-width: 1060px;
}

.du-login-card {
    display: grid;
    grid-template-columns: minmax(300px, 35%) minmax(0, 1fr);
    background: #ffffff;
    border: 1px solid var(--du-line);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(20, 28, 42, 0.08);
}

/* ------------------------------- brand side ----------------------------- */

.du-login-brand {
    position: relative;
    padding: 40px 34px 32px;
    display: flex;
    flex-direction: column;
    color: #ffffff;
    background: var(--du-navy);
}

.du-brand-head {
    display: flex;
    align-items: center;
    gap: 16px;
}

.du-brand-logo {
    flex: 0 0 auto;
    width: 62px;
    height: 62px;
    padding: 4px;
    border-radius: 50%;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
}

.du-brand-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
    display: block;
}

.du-brand-title {
    margin: 0;
    font-family: Georgia, 'Times New Roman', 'Noto Serif Bengali', serif;
    font-size: 22px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: 0.2px;
}

.du-brand-sub {
    margin: 5px 0 0;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 2.6px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.62);
    font-family: 'Segoe UI', Arial, sans-serif;
}

.du-brand-office {
    margin: 10px 0 0;
    padding-left: 10px;
    border-left: 2px solid rgba(185, 136, 43, 0.85);
    font-size: 12px;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.78);
}

.du-brand-divider {
    height: 2px;
    width: 44px;
    margin: 30px 0 26px;
    background: var(--du-gold);
}

.du-brand-list {
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 13px;
    line-height: 1.7;
}

.du-brand-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 13px;
    color: rgba(255, 255, 255, 0.82);
}

.du-brand-list .du-tick {
    flex: 0 0 auto;
    width: 14px;
    height: 14px;
    margin-top: 4px;
    border-left: 1.5px solid var(--du-gold);
    border-bottom: 1.5px solid var(--du-gold);
    transform: rotate(-45deg);
    font-size: 0;
    line-height: 0;
    text-indent: -999px;
    overflow: hidden;
}

/* -------------------------------- form side ----------------------------- */

.du-login-form {
    padding: 42px 40px 34px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.du-form-head {
    margin-bottom: 26px;
}

.du-form-head h4 {
    margin: 0 0 8px;
    font-family: Georgia, 'Times New Roman', 'Noto Serif Bengali', serif;
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 0.2px;
    color: var(--du-navy-deep);
}

.du-form-head p {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--du-body);
}

.du-form-rule {
    height: 1px;
    width: 100%;
    margin-top: 20px;
    background: var(--du-line);
}

.du-login-form .form-group {
    margin-bottom: 16px;
}

.du-login-form label {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
    color: #3c4658;
}

.du-login-form .form-line {
    border: 1px solid var(--du-line);
    border-radius: 3px;
    background: #ffffff;
    transition: border-color 150ms ease, box-shadow 150ms ease;
}

.du-login-form .form-line:hover {
    border-color: #c3c8d1;
}

.du-login-form .form-line:focus-within {
    border-color: var(--du-navy);
    box-shadow: 0 0 0 2px rgba(10, 42, 82, 0.10);
}

.du-login-form .form-control {
    width: 100%;
    height: 44px;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 13px;
    border: 0;
    outline: 0;
    background: transparent;
    font-size: 15px;
    color: var(--du-ink);
    font-family: inherit;
}

.du-login-form .form-control::placeholder {
    color: #a5adba;
}

/* the shared textbox widget prepends an icon — not wanted here */
.du-login-form .form-line .material-icons,
.du-login-form .form-line .input-group-addon,
.du-login-form .form-line .prepend-icon,
.du-login-form .form-line .field-icon {
    display: none !important;
}

.du-login-form .form-line .input-group {
    display: block !important;
    width: 100%;
}

.du-login-form .form-line .form-control,
.du-login-form .form-line input {
    padding-left: 13px !important;
}

/* -------------------------------- captcha ------------------------------- */

.du-captcha-box {
    margin: 2px 0 4px;
    padding: 14px 16px;
    border: 1px solid var(--du-line);
    border-radius: 3px;
    background: #fafbfc;
}

.du-captcha-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.du-captcha-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    color: #7c8494;
    font-family: 'Segoe UI', Arial, sans-serif;
}

.du-captcha-body {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 12px;
    align-items: center;
}

.du-captcha-body img {
    height: 44px;
    width: auto;
    max-width: 124px;
    border: 1px solid var(--du-line);
    border-radius: 2px;
    background: #ffffff;
    display: block;
}

.du-login-form #captcharegenerate {
    height: 26px;
    width: 26px;
    padding: 0;
    border: 0;
    border-radius: 2px;
    background: transparent;
    color: #6c7789;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 150ms ease, background 150ms ease;
}

.du-login-form #captcharegenerate:hover {
    background: #eef1f6;
    color: var(--du-navy);
}

.du-login-form #captcharegenerate:active {
    transform: rotate(-140deg);
}

.du-login-form #captcharegenerate .material-icons {
    font-size: 15px;
}

.du-captcha-input .form-group {
    margin-bottom: 0;
}

/* ------------------------------ actions/links --------------------------- */

.du-login-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.du-login-remember {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--du-body);
    cursor: pointer;
}

.du-login-remember input[type="checkbox"] {
    width: 15px;
    height: 15px;
    margin: 0;
    accent-color: var(--du-navy);
}

.du-login-remember label {
    margin: 0 !important;
    font-size: 13px !important;
    font-weight: 400 !important;
    color: var(--du-body) !important;
}

.du-login-form #signinbutton,
.du-login-form #signinbuttoncopy,
.du-login-form #signinbutton.btn,
.du-login-form input#signinbutton,
.du-login-form button#signinbutton {
    min-width: 148px;
    height: 46px;
    padding: 0 30px !important;
    border: 0 !important;
    border-radius: 3px !important;
    background: var(--du-navy) !important;
    background-color: var(--du-navy) !important;
    color: #ffffff !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    letter-spacing: 0.6px;
    text-transform: none !important;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: none !important;
    transition: background-color 150ms ease;
}

.du-login-form #signinbutton:hover,
.du-login-form #signinbuttoncopy:hover {
    background: var(--du-navy-deep) !important;
    filter: none;
    transform: none;
}

.du-login-form #signinbutton:active,
.du-login-form #signinbuttoncopy:active {
    background: #04132b !important;
}

.du-login-links {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--du-line);
    font-size: 13px;
    flex-wrap: wrap;
}

.du-login-links a {
    color: var(--du-navy);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
    transition: border-color 150ms ease, color 150ms ease;
}

.du-login-links a:hover {
    color: var(--du-navy-deep);
    border-bottom-color: var(--du-gold);
}

/* ------------------------------- responsive ----------------------------- */

@media (max-width: 900px) {
    .du-login-page {
        padding: 24px 16px;
        align-items: flex-start;
    }

    .du-login-card {
        grid-template-columns: 1fr;
    }

    .du-login-brand {
        padding: 22px 20px;
    }

    .du-brand-logo {
        width: 46px;
        height: 46px;
        padding: 3px;
    }

    .du-brand-title {
        font-size: 18px;
    }

    .du-brand-sub {
        font-size: 9px;
        letter-spacing: 2px;
    }

    .du-brand-divider,
    .du-brand-list {
        display: none;
    }

    .du-login-form {
        padding: 28px 22px 26px;
    }

    .du-form-head {
        margin-bottom: 20px;
    }

    .du-form-head h4 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .du-login-page {
        padding: 0;
        align-items: stretch;
        background: #ffffff;
    }

    .du-login-card {
        border: 0;
        border-radius: 0;
        box-shadow: none;
        min-height: 100vh;
    }

    .du-login-form {
        padding: 24px 18px 22px;
    }

    .du-login-form .form-control {
        height: 46px;
        font-size: 16px;
    }

    .du-captcha-body {
        grid-template-columns: 1fr;
        row-gap: 10px;
    }

    .du-captcha-body img {
        max-width: 100%;
    }

    .du-login-actions {
        flex-direction: column-reverse;
        align-items: stretch;
        gap: 14px;
    }

    .du-login-form #signinbutton {
        width: 100%;
        height: 48px;
    }

    .du-login-links {
        justify-content: space-between;
    }
}

/* --------------------------------------------------------------------------
   Defensive overrides: the shared widgets ship with their own icon, input
   tint and an inner .btn layer — flatten them so the login looks like one
   piece rather than a widget collage.
   -------------------------------------------------------------------------- */

.du-login-form .form-line i,
.du-login-form .form-line em,
.du-login-form .form-line .material-icons,
.du-login-form .form-line .material-symbols-outlined,
.du-login-form .form-line .input-group-addon,
.du-login-form .form-line .prepend-icon,
.du-login-form .form-line .field-icon,
.du-login-form .form-line .input-icon {
    display: none !important;
}

.du-login-form .form-line input,
.du-login-form .form-line .form-control {
    background: transparent !important;
    background-color: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
    padding-left: 13px !important;
}

/* the widget nests a .btn / span inside the submit — make it invisible */
.du-login-form #signinbutton *,
.du-login-form #signinbuttoncopy *,
.du-login-form #signinbutton .btn,
.du-login-form #signinbutton span,
.du-login-form #signinbutton i {
    background: transparent !important;
    background-color: transparent !important;
    background-image: none !important;
    border: 0 !important;
    box-shadow: none !important;
    color: #ffffff !important;
    padding: 0 !important;
    margin: 0 !important;
    min-width: 0 !important;
    width: auto !important;
    height: auto !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    letter-spacing: 0.6px !important;
    text-transform: none !important;
    line-height: 1 !important;
}

.du-login-form #signinbutton,
.du-login-form #signinbuttoncopy {
    padding: 0 30px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}

/* --------------------------------------------------------------------------
   Polish: password reveal, Caps Lock hint, submit spinner, seal watermark
   and a tighter captcha row.
   -------------------------------------------------------------------------- */

.du-login-form {
    position: relative;
}

.du-login-form > * {
    position: relative;
    z-index: 1;
}

/* faint DU seal behind the form */
.du-login-form::after {
    content: "";
    position: absolute;
    right: 26px;
    bottom: 22px;
    width: 132px;
    height: 132px;
    background: url("https://student.eis.du.ac.bd/images/dulogo/dulogo.png") no-repeat center / contain;
    opacity: 0.055;
    pointer-events: none;
    z-index: 0;
}

.du-login-form .form-line.du-has-toggle {
    position: relative;
}

.du-login-form .du-has-toggle input,
.du-login-form .du-has-toggle .form-control {
    padding-right: 44px !important;
}

.du-login-form .du-pw-toggle {
    position: absolute;
    top: 50%;
    right: 4px;
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    padding: 0;
    border: 0;
    border-radius: 3px;
    background: transparent !important;
    color: #8b95a6;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 150ms ease, background-color 150ms ease;
}

.du-login-form .du-pw-toggle:hover {
    color: var(--du-navy);
    background: #eef1f6 !important;
}

.du-login-form .du-pw-toggle .material-icons {
    display: inline-block !important;
    font-size: 18px;
    color: inherit !important;
    background: transparent !important;
}

.du-caps {
    display: none;
    margin: 6px 0 0;
    font-size: 11.5px;
    color: #a96a00;
}

.du-caps.du-show {
    display: block;
}

.du-login-form #signinbutton.is-loading,
.du-login-form #signinbuttoncopy.is-loading {
    pointer-events: none;
    opacity: 0.92;
}

.du-login-form #signinbutton.is-loading::before,
.du-login-form #signinbuttoncopy.is-loading::before {
    content: "";
    width: 13px;
    height: 13px;
    margin-right: 9px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: #ffffff;
    animation: duSpin 700ms linear infinite;
}

@keyframes duSpin {
    to {
        transform: rotate(360deg);
    }
}

@media (prefers-reduced-motion: reduce) {
    .du-login-form #signinbutton.is-loading::before,
    .du-login-form #signinbuttoncopy.is-loading::before {
        animation-duration: 2s;
    }
}

/* tighter captcha */
.du-captcha-box {
    padding: 11px 13px 13px;
}

.du-captcha-top {
    margin-bottom: 8px;
}

.du-captcha-body img {
    height: 40px;
}

/* --------------------------------------------------------------------------
   Widget-proofing: force a plain white field, keep the line positioned so the
   reveal button anchors inside it, and never clip the button.
   -------------------------------------------------------------------------- */

.du-login-form .form-line {
    position: relative !important;
    width: 100% !important;
    background: #ffffff !important;
    overflow: visible !important;
}

.du-login-form .form-group input,
.du-login-form .form-line input,
.du-login-form .form-line .form-control,
.du-login-form input.form-control {
    background: #ffffff !important;
    background-color: #ffffff !important;
    background-image: none !important;
    border: 0 !important;
    box-shadow: none !important;
}

.du-login-form .du-pw-toggle {
    z-index: 3;
}

.du-login-form .du-has-toggle input,
.du-login-form .du-has-toggle .form-control {
    padding-right: 44px !important;
}

.du-login-form .du-has-toggle .du-pw-toggle {
    right: 5px;
}

@media (max-width: 480px) {
    .du-login-form::after {
        width: 104px;
        height: 104px;
        right: 14px;
        bottom: 14px;
    }
}

/* framework validation popup — keep it readable and inside the field */
.du-login-form .popuptext,
.du-login-form .popup .popuptext {
    display: inline-block !important;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.4;
    color: #c0392b;
}

.du-login-form .form-group .popup .form-line,
.du-login-form .form-line.popup {
    border-color: #c0392b !important;
    box-shadow: 0 0 0 2px rgba(192, 57, 43, 0.10) !important;
}

/* inline login error panel (replaces the browser alert) */
.du-login-error {
    display: none;
    margin: 0 0 18px;
    padding: 12px 14px;
    border: 1px solid #f0c4bf;
    border-left: 3px solid #c0392b;
    border-radius: 3px;
    background: #fdf4f3;
    font-size: 13px;
    line-height: 1.55;
    color: #8f2b21;
}

.du-login-error strong {
    display: block;
    margin-bottom: 4px;
    font-size: 13.5px;
    font-weight: 700;
}

.du-login-error span {
    display: block;
}

.du-login-error em {
    display: block;
    margin-top: 8px;
    font-style: normal;
    font-size: 11px;
    color: #a9746e;
}

.du-login-error-link {
    display: inline-block;
    margin-top: 8px;
    color: #0a2a52 !important;
    font-weight: 700;
    text-decoration: underline;
}