:root {
    --primary-blue: #1565e8;
    --primary-dark: #063b9f;
    --primary-light: #edf5ff;
    --text-dark: #081a3a;
    --text-muted: #61708f;
    --border: #d8e2f0;
    --background: #f5f9ff;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body.auth-shell {
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    background: linear-gradient(180deg, #eff6ff 0%, #f8fbff 100%);
    color: var(--text-dark);
}

.auth-page {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    overflow: hidden;
}

.auth-hero {
    position: relative;
    padding: 36px 40px 28px;
    color: #0a2a63;
    background:
        radial-gradient(circle at top left, rgba(21, 101, 232, 0.18), transparent 42%),
        linear-gradient(145deg, #f4f9ff 0%, #e8f2ff 100%);
    overflow: hidden;
}

.auth-hero__overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent 40%),
        radial-gradient(circle at 82% 24%, rgba(21, 101, 232, 0.12), transparent 18%),
        radial-gradient(circle at 72% 78%, rgba(6, 59, 159, 0.12), transparent 22%);
    pointer-events: none;
}

.auth-hero__branding,
.feature-list {
    position: relative;
    z-index: 1;
}

.auth-brandmark {
    width: 68px;
    height: 68px;
    display: grid;
    place-items: center;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--primary-blue);
    box-shadow: 0 12px 32px rgba(21, 101, 232, 0.14);
    margin-bottom: 18px;
}

.auth-brandmark svg {
    width: 40px;
    height: 40px;
}

.auth-hero h1 {
    margin: 0;
    font-size: clamp(48px, 4.9vw, 72px);
    line-height: 0.95;
    letter-spacing: -0.05em;
    font-weight: 800;
}

.auth-hero p {
    margin: 14px 0 0;
    font-size: 20px;
    color: #3d5b90;
    font-weight: 600;
}

.feature-list {
    margin-top: 44px;
    display: grid;
    gap: 18px;
    max-width: 540px;
}

.feature-item {
    display: grid;
    grid-template-columns: 52px 1fr;
    gap: 16px;
    align-items: start;
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-blue), #38a1ff);
    box-shadow: 0 10px 24px rgba(21, 101, 232, 0.24);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-item h2 {
    margin: 0 0 6px;
    font-size: 18px;
    color: var(--text-dark);
}

.feature-item p {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-muted);
    font-weight: 500;
}

.auth-hero__image {
    position: absolute;
    right: -24px;
    bottom: -10px;
    width: min(92%, 700px);
    max-height: 54vh;
    object-fit: contain;
    opacity: 0.72;
    filter: saturate(1.05) contrast(1.02);
    pointer-events: none;
}

.auth-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.92));
}

.auth-card {
    width: min(100%, 560px);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: 0 22px 60px rgba(19, 49, 114, 0.14);
    padding: 42px 40px 32px;
}

.auth-card__icon {
    width: 62px;
    height: 62px;
    border-radius: 50%;
    margin-bottom: 18px;
    display: grid;
    place-items: center;
    color: var(--primary-blue);
    background: linear-gradient(180deg, #eff6ff, #ffffff);
    border: 1px solid #d7e4f7;
}

.auth-card__icon svg {
    width: 28px;
    height: 28px;
}

.auth-card h2 {
    margin: 0;
    font-size: 30px;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.auth-card__subtitle {
    margin: 10px 0 0;
    color: var(--text-muted);
    line-height: 1.6;
}

.auth-alert {
    margin-top: 18px;
    border-radius: 16px;
    padding: 12px 14px;
    background: #fff3f3;
    color: #a61b1b;
    border: 1px solid #ffd1d1;
}

.auth-form {
    margin-top: 22px;
    display: grid;
    gap: 18px;
}

.field {
    display: grid;
    gap: 8px;
}

.field__label {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
}

.field__control {
    position: relative;
    display: flex;
    align-items: center;
}

.field__control input {
    width: 100%;
    height: 58px;
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 0 18px 0 48px;
    font-size: 16px;
    color: var(--text-dark);
    background: #fbfdff;
    transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.field__control input:focus {
    outline: none;
    border-color: rgba(21, 101, 232, 0.8);
    box-shadow: 0 0 0 4px rgba(21, 101, 232, 0.12);
    background: #fff;
}

.field__control--icon .field__icon {
    position: absolute;
    left: 16px;
    width: 18px;
    height: 18px;
    color: #7d90b7;
    pointer-events: none;
}

.field__control--icon .field__icon svg {
    width: 18px;
    height: 18px;
}

.password-toggle {
    position: absolute;
    right: 14px;
    width: 38px;
    height: 38px;
    border: 0;
    border-radius: 50%;
    background: rgba(237, 245, 255, 0.9);
    color: var(--primary-blue);
    cursor: pointer;
    display: grid;
    place-items: center;
}

.password-toggle svg {
    width: 18px;
    height: 18px;
}

.checkbox {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    color: var(--text-muted);
    font-size: 14px;
    user-select: none;
}

.checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-blue);
}

.auth-links {
    display: flex;
    justify-content: flex-end;
    font-size: 14px;
}

.auth-links a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

.submit-button {
    margin-top: 4px;
    height: 60px;
    border: 0;
    border-radius: 18px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.01em;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 16px 32px rgba(21, 101, 232, 0.25);
    transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}

.submit-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 20px 38px rgba(21, 101, 232, 0.28);
}

.submit-button:disabled {
    opacity: 0.72;
    cursor: wait;
    transform: none;
}

.submit-button__spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.42);
    border-top-color: #fff;
    border-radius: 50%;
    display: none;
    animation: spin .8s linear infinite;
}

.submit-button.is-loading .submit-button__spinner {
    display: inline-block;
}

.submit-button.is-loading .submit-button__label {
    opacity: 0.92;
}

.auth-separator {
    margin: 30px 0 16px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 14px;
    color: var(--text-muted);
}

.auth-separator span:first-child,
.auth-separator span:last-child {
    height: 1px;
    background: linear-gradient(90deg, transparent, #d5dfef, transparent);
}

.auth-separator__shield {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #eff6ff;
    color: var(--primary-blue);
    border: 1px solid #d8e7fb;
}

.auth-separator__shield svg {
    width: 18px;
    height: 18px;
}

.auth-footer {
    margin: 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.field__error {
    color: #b42318;
    font-size: 13px;
}

.field__control input[aria-invalid="true"] {
    border-color: #f04438;
    background: #fffafa;
}

.submit-button:focus-visible,
.password-toggle:focus-visible,
.field__control input:focus-visible,
.checkbox input:focus-visible,
.auth-links a:focus-visible,
.auth-card a:focus-visible,
.nav a:focus-visible,
.topbar form button:focus-visible {
    outline: 3px solid rgba(21, 101, 232, 0.35);
    outline-offset: 2px;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@media (max-width: 1024px) {
    .auth-page {
        grid-template-columns: 1fr;
    }

    .auth-hero {
        min-height: 320px;
    }

    .auth-hero__image {
        width: min(86%, 560px);
        opacity: 0.56;
    }

    .auth-panel {
        padding-top: 0;
        padding-bottom: 36px;
    }
}

@media (max-width: 640px) {
    .auth-hero {
        padding: 28px 20px 18px;
        min-height: auto;
    }

    .auth-hero__image {
        display: none;
    }

    .feature-list {
        margin-top: 24px;
    }

    .auth-card {
        padding: 30px 22px 24px;
        border-radius: 24px;
    }

    .auth-card h2 {
        font-size: 26px;
    }

    .field__control input,
    .submit-button {
        height: 56px;
    }
}