:root {
    --login-blue: #0a5bc0;
    --login-blue-dark: #07458f;
    --login-navy: #052a59;
    --login-yellow: #ffc400;
    --login-text: #173657;
    --login-muted: #7a8ba3;
    --login-border: #e3eaf3;
    --login-bg: #f4f7fb;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body.login-page {
    margin: 0;
    font-family: Inter, system-ui, sans-serif;
    color: var(--login-text);
    background: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.login-shell {
    flex: 1;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    min-height: 0;
}
.login-visual {
    position: relative;
    overflow: hidden;
    color: #fff;
    background:
        linear-gradient(105deg, rgba(5, 36, 84, .92) 0%, rgba(8, 58, 130, .78) 42%, rgba(8, 58, 130, .45) 68%, rgba(8, 58, 130, .28) 100%),
        var(--login-bg-image) center/cover no-repeat;
    padding: 36px 44px 28px;
    display: flex;
    flex-direction: column;
}
.login-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 55% 70% at 82% 78%, rgba(255,255,255,.10), transparent 70%),
        linear-gradient(90deg, rgba(5, 36, 84, .35) 0%, transparent 55%);
    pointer-events: none;
    z-index: 0;
}
.login-visual::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    width: min(58%, 540px);
    height: min(90%, 700px);
    background: var(--login-students) right bottom / cover no-repeat;
    pointer-events: none;
    z-index: 1;
    border-radius: 28px 0 0 0;
    box-shadow: -18px -18px 50px rgba(0, 20, 50, .25);
    -webkit-mask-image:
        linear-gradient(90deg, transparent 0%, #000 22%),
        linear-gradient(0deg, #000 70%, transparent 100%);
    -webkit-mask-composite: source-in;
    mask-image:
        linear-gradient(90deg, transparent 0%, #000 22%),
        linear-gradient(0deg, #000 78%, transparent 100%);
    mask-composite: intersect;
}
.login-visual-inner {
    position: relative;
    z-index: 2;
    max-width: 520px;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.login-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 48px;
}
.login-brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    filter: drop-shadow(0 6px 14px rgba(0,0,0,.25));
}
.login-brand strong {
    display: block;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -.01em;
}
.login-brand small {
    display: block;
    font-size: .72rem;
    opacity: .85;
    margin-top: 2px;
}
.login-visual h1 {
    font-family: Poppins, Inter, sans-serif;
    font-size: clamp(2rem, 3.4vw, 2.85rem);
    font-weight: 800;
    line-height: 1.15;
    margin: 0 0 28px;
    max-width: 14ch;
}
.login-visual h1 span { color: var(--login-yellow); }
.login-features {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}
.login-features li {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.18);
    backdrop-filter: blur(10px);
    border-radius: 999px;
    padding: 10px 18px 10px 10px;
    width: fit-content;
    font-size: .92rem;
    font-weight: 600;
}
.login-features .ico {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 1rem;
    flex: none;
}
.login-features .ico.blue { background: #2f7de1; }
.login-features .ico.green { background: #22b573; }
.login-features .ico.gold { background: #e8b000; color: #12325a; }
.login-features .ico.pink { background: #e85d8c; }
.login-script {
    margin-top: auto;
    padding-top: 40px;
    font-family: "Caveat", cursive;
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 600;
    line-height: 1.15;
    max-width: 11ch;
}
.login-script .mark {
    display: inline;
    background-image: linear-gradient(transparent 62%, rgba(255, 196, 0, .85) 62% 88%, transparent 88%);
}
.login-quote {
    margin: 18px 0 0;
    font-size: .88rem;
    font-style: italic;
    opacity: .9;
    max-width: 28ch;
}

.login-panel {
    background: var(--login-bg);
    display: flex;
    flex-direction: column;
    padding: 22px 28px 18px;
    position: relative;
}
.login-panel-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 4px;
}
.login-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--login-blue);
    text-decoration: none;
    font-size: .88rem;
    font-weight: 600;
}
.login-back:hover { color: var(--login-blue-dark); text-decoration: underline; }
.login-back i { font-size: 1rem; }
.login-lang {
    align-self: flex-end;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 1px solid var(--login-border);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: .82rem;
    font-weight: 600;
    color: var(--login-text);
}
.login-lang .flag {
    width: 18px;
    height: 12px;
    border-radius: 2px;
    background:
        linear-gradient(90deg, #007fff 33%, #f7d618 33% 66%, #ce1126 66%);
    box-shadow: 0 0 0 1px rgba(0,0,0,.08);
}
.login-card {
    width: min(440px, 100%);
    margin: auto;
    background: #fff;
    border-radius: 22px;
    box-shadow: 0 18px 50px rgba(12, 54, 104, .10);
    border: 1px solid rgba(227, 234, 243, .9);
    padding: 34px 32px 28px;
}
.login-card-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}
.login-card-brand img {
    width: 44px;
    height: 44px;
    object-fit: contain;
}
.login-card-brand strong {
    display: block;
    font-size: .98rem;
    color: var(--login-navy);
}
.login-card-brand small {
    display: block;
    font-size: .72rem;
    color: var(--login-muted);
}
.login-card h2 {
    margin: 0 0 6px;
    font-family: Poppins, Inter, sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--login-blue);
}
.login-card > p.lead {
    margin: 0 0 22px;
    color: var(--login-muted);
    font-size: .92rem;
}
.role-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 22px;
}
.role-tab {
    border: 1.5px solid var(--login-border);
    background: #fff;
    border-radius: 14px;
    padding: 10px 6px 8px;
    cursor: pointer;
    text-align: center;
    color: var(--login-muted);
    font: inherit;
    transition: .15s ease;
}
.role-tab i {
    display: block;
    font-size: 1.15rem;
    margin-bottom: 4px;
    color: #8fa0b5;
}
.role-tab span {
    display: block;
    font-size: .68rem;
    font-weight: 700;
    line-height: 1.2;
}
.role-tab:hover { border-color: #b7cce8; color: var(--login-blue); }
.role-tab:hover i { color: var(--login-blue); }
.role-tab.active {
    border-color: var(--login-blue);
    background: #edf4ff;
    color: var(--login-blue);
    box-shadow: 0 0 0 3px rgba(10, 91, 192, .12);
}
.role-tab.active i { color: var(--login-blue); }
.login-form label.field {
    display: grid;
    gap: 7px;
    margin-bottom: 14px;
    font-size: .82rem;
    font-weight: 700;
    color: var(--login-text);
}
.field-wrap {
    position: relative;
    display: flex;
    align-items: center;
}
.field-wrap > i.bi:first-child {
    position: absolute;
    left: 14px;
    color: #98a8bc;
    font-size: 1rem;
    pointer-events: none;
}
.field-wrap input {
    width: 100%;
    border: 1.5px solid var(--login-border);
    border-radius: 12px;
    padding: 12px 42px 12px 42px;
    font: inherit;
    font-size: .92rem;
    background: #fff;
    color: var(--login-text);
}
.field-wrap input:focus {
    outline: 0;
    border-color: #7eb0ef;
    box-shadow: 0 0 0 3px rgba(10, 91, 192, .12);
}
.field-wrap .toggle-pass {
    position: absolute;
    right: 8px;
    border: 0;
    background: transparent;
    color: #98a8bc;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    cursor: pointer;
    display: grid;
    place-items: center;
}
.field-wrap .toggle-pass:hover { color: var(--login-blue); background: #f3f7fc; }
.login-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin: 4px 0 18px;
    font-size: .82rem;
}
.remember {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: var(--login-text);
    cursor: pointer;
}
.remember input {
    width: 16px;
    height: 16px;
    accent-color: var(--login-blue);
}
.forgot {
    color: var(--login-blue);
    font-weight: 700;
    text-decoration: none;
}
.forgot:hover { text-decoration: underline; }
.btn-login {
    width: 100%;
    border: 0;
    border-radius: 12px;
    background: var(--login-blue);
    color: #fff;
    font: inherit;
    font-weight: 700;
    font-size: 1rem;
    padding: 13px 18px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 10px 24px rgba(10, 91, 192, .28);
}
.btn-login:hover { background: var(--login-blue-dark); }
.login-or {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 12px;
    margin: 18px 0 14px;
    color: var(--login-muted);
    font-size: .82rem;
}
.login-or::before,
.login-or::after {
    content: "";
    height: 1px;
    background: var(--login-border);
}
.social-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.btn-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1.5px solid var(--login-border);
    background: #fff;
    border-radius: 12px;
    padding: 11px 10px;
    font: inherit;
    font-size: .82rem;
    font-weight: 600;
    color: var(--login-text);
    text-decoration: none;
    cursor: pointer;
}
.btn-social:hover { background: #f8fafc; border-color: #c9d7ea; }
.btn-social img { width: 18px; height: 18px; }
.login-signup {
    margin: 20px 0 0;
    text-align: center;
    font-size: .84rem;
    color: var(--login-muted);
}
.login-signup a {
    color: var(--login-blue);
    font-weight: 700;
    text-decoration: none;
}
.login-signup a:hover { text-decoration: underline; }
.login-alert {
    background: #fdeaea;
    color: #9b1c1c;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: .85rem;
    margin-bottom: 14px;
}
.login-hint {
    margin-top: 14px;
    font-size: .72rem;
    color: #9aa8ba;
    text-align: center;
    line-height: 1.4;
}
.login-footer {
    border-top: 1px solid var(--login-border);
    background: #fff;
    padding: 12px 28px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: .78rem;
    color: var(--login-muted);
}
.login-footer a {
    color: var(--login-muted);
    text-decoration: none;
}
.login-footer a:hover { color: var(--login-blue); }
.login-footer-links { display: flex; gap: 8px; flex-wrap: wrap; }
.login-footer-links span { opacity: .45; }

@media (max-width: 980px) {
    .login-shell { grid-template-columns: 1fr; }
    .login-visual {
        min-height: 320px;
        padding: 28px 24px;
    }
    .login-visual::after {
        width: 46%;
        opacity: .9;
    }
    .login-visual h1 { max-width: 16ch; font-size: 1.9rem; }
    .login-features { display: none; }
    .login-script { display: none; }
    .login-panel { padding: 16px; }
    .login-card { padding: 26px 20px; border-radius: 18px; }
    .role-tabs { gap: 6px; }
    .role-tab span { font-size: .62rem; }
}
@media (max-width: 560px) {
    .login-visual::after { display: none; }
    .social-row { grid-template-columns: 1fr; }
    .login-footer { flex-direction: column; }
}