:root {
    /* Typography */
    --login-font-family: Inter, Lato, Arial, sans-serif;
    --login-font-size-title: clamp(2rem, 4vw, 2.4rem);
    --login-font-size-title-mobile: 1.85rem;
    --login-font-size-body: 1rem;
    --login-font-size-body-sm: 0.95rem;
    --login-font-size-caption: 0.92rem;
    --login-line-height-title: 1.05;
    --login-line-height-body: 1.45;
    --login-letter-spacing-title: -0.03em;
    --login-letter-spacing-button: 0.01em;

    /* Colors */
    --login-color-page-bg: #05070d;
    --login-color-text: #ffffff;
    --login-color-text-soft: rgba(255, 255, 255, 0.78);
    --login-color-text-placeholder: rgba(255, 255, 255, 0.62);

    --login-color-accent: #7ea2ff;
    --login-color-accent-strong: rgba(126, 162, 255, 0.65);
    --login-color-accent-ring: rgba(126, 162, 255, 0.16);
    --login-color-accent-ring-strong: rgba(126, 162, 255, 0.18);

    --login-color-danger: #ff7d7d;
    --login-color-danger-bg: rgba(255, 95, 95, 0.10);
    --login-color-danger-border: rgba(255, 125, 125, 0.28);
    --login-color-danger-text: #ffd6d6;

    --login-color-border: rgba(255, 255, 255, 0.16);
    --login-color-border-strong: rgba(255, 255, 255, 0.28);
    --login-color-border-input: rgba(255, 255, 255, 0.14);
    --login-color-border-input-hover: rgba(255, 255, 255, 0.20);
    --login-color-border-card-active: rgba(255, 255, 255, 0.22);

    --login-color-surface-card: rgba(255, 255, 255, 0.08);
    --login-color-surface-card-active: rgba(255, 255, 255, 0.12);
    --login-color-surface-input: rgba(255, 255, 255, 0.05);
    --login-color-surface-input-hover: rgba(255, 255, 255, 0.08);
    --login-color-surface-input-focus: rgba(255, 255, 255, 0.14);

    --login-color-button-text: #ffffff;
    --login-color-button-top: #ff3b5c;
    --login-color-button-bottom: #b3122f;
    --login-color-button-border: rgba(255, 80, 100, 0.5);
    --login-color-button-top-hover: #ff5a75;
    --login-color-button-bottom-hover: #c9153a;
    --login-color-button-glow: rgba(255, 60, 90, 0.45);
    --login-color-button-shadow-hover: rgba(180, 20, 50, 0.5);

    /* Background effects */
    --login-bg-radial-primary: rgba(88, 123, 255, 0.18);
    --login-bg-radial-secondary: rgba(255, 255, 255, 0.08);
    --login-bg-overlay-top: rgba(5, 7, 13, 0.35);
    --login-bg-overlay-bottom: rgba(5, 7, 13, 0.55);
    --login-bg-overlay-left: rgba(5, 7, 13, 0.25);
    --login-bg-overlay-right: rgba(5, 7, 13, 0.18);
    --login-bg-image-opacity: 0.62;

    /* Shadows */
    --login-shadow-card: 0 20px 60px rgba(0, 0, 0, 0.38);
    --login-shadow-card-active:
        0 20px 60px rgba(0, 0, 0, 0.42),
        0 0 0 1px rgba(255, 255, 255, 0.04) inset;
    --login-shadow-button:
        0 12px 30px rgba(78, 111, 209, 0.28),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
    --login-shadow-button-hover:
        0 16px 36px rgba(78, 111, 209, 0.34),
        inset 0 1px 0 rgba(255, 255, 255, 0.22);
    --login-shadow-button-focus:
        0 0 0 4px rgba(126, 162, 255, 0.18),
        0 16px 36px rgba(78, 111, 209, 0.34);
    --login-shadow-input-focus:
        0 0 0 4px rgba(126, 162, 255, 0.16),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    --login-shadow-input-error: 0 0 0 4px rgba(255, 125, 125, 0.10);

    /* Radius */
    --login-radius-card: 28px;
    --login-radius-card-mobile: 20px;
    --login-radius-control: 12px;
    --login-radius-card-active: 20px;

    /* Sizing */
    --login-shell-max-inline: 420px;
    --login-control-min-block-size: 52px;
    --login-checkbox-size: 16px;

    /* Spacing */
    --login-space-shell: 24px;
    --login-space-shell-mobile: 18px;
    --login-space-card: 32px;
    --login-space-card-mobile-block: 24px;
    --login-space-card-mobile-inline: 18px;

    --login-space-header-end: 24px;
    --login-space-title-end: 8px;
    --login-space-field-stack: 14px;
    --login-space-options-start: 18px;
    --login-space-options-end: 22px;
    --login-space-button-start: 14px;

    --login-space-control-inline: 16px;
    --login-space-button-inline: 18px;
    --login-space-message-block: 12px;
    --login-space-message-inline: 14px;
    --login-space-checkbox-gap: 10px;

    /* Motion */
    --login-duration-fast: 0.18s;
    --login-duration-base: 0.22s;
    --login-duration-bg: 700ms;
    --login-easing-standard: ease;

    /* Blur */
    --login-blur-idle: 2px;
    --login-blur-active: 10px;
    --login-saturate-idle: 135%;
    --login-saturate-active: 145%;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    overflow: hidden;
    background: var(--login-color-page-bg);
    color: var(--login-color-text);
    font-family: var(--login-font-family);
    font-size: var(--login-font-size-body);
}

input,
button {
    font: inherit;
}

input {
    outline: none;
}

button {
    appearance: none;
    border: 0;
}

.login-page {
    position: relative;
    overflow: hidden;
    min-block-size: 100vh;
    min-block-size: 100svh;
    background:
        radial-gradient(circle at top left, var(--login-bg-radial-primary), transparent 32%),
        radial-gradient(circle at bottom right, var(--login-bg-radial-secondary), transparent 26%),
        var(--login-color-page-bg);
}

.login-page__bg {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    user-select: none;
    pointer-events: none;
    opacity: 0;
    transform: scale(1.02);
    animation: login-bg-in var(--login-duration-bg) var(--login-easing-standard) forwards;
}

.login-page__overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(to bottom, var(--login-bg-overlay-top), var(--login-bg-overlay-bottom)),
        linear-gradient(to right, var(--login-bg-overlay-left), var(--login-bg-overlay-right));
}

.login-shell {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    min-block-size: 100vh;
    min-block-size: 100svh;
    padding: var(--login-space-shell);
}

.login-card {
    inline-size: 100%;
    max-inline-size: var(--login-shell-max-inline);
    padding-block: var(--login-space-card);
    padding-inline: var(--login-space-card);
    border: 1px solid var(--login-color-border);
    border-radius: var(--login-radius-card);
    background-color: var(--login-color-surface-card);
    box-shadow: var(--login-shadow-card);
    backdrop-filter: blur(var(--login-blur-idle)) saturate(var(--login-saturate-idle));
    -webkit-backdrop-filter: blur(var(--login-blur-idle)) saturate(var(--login-saturate-idle));
    corner-shape: squircle;
    transition:
        backdrop-filter var(--login-duration-base) var(--login-easing-standard),
        -webkit-backdrop-filter var(--login-duration-base) var(--login-easing-standard),
        background-color var(--login-duration-base) var(--login-easing-standard),
        border-color var(--login-duration-base) var(--login-easing-standard),
        box-shadow var(--login-duration-base) var(--login-easing-standard),
        border-radius var(--login-duration-base) var(--login-easing-standard),
        corner-shape 0s linear var(--login-duration-base);

    transition-behavior: allow-discrete;
}

.login-card:focus-within {
    border-color: var(--login-color-border-card-active);
    border-radius: 20px;
    background-color: var(--login-color-surface-card-active);
    box-shadow: var(--login-shadow-card-active);
    backdrop-filter: blur(var(--login-blur-active)) saturate(var(--login-saturate-active));
    -webkit-backdrop-filter: blur(var(--login-blur-active)) saturate(var(--login-saturate-active));
    corner-shape: round;
}

.login-card__header {
    margin-block-end: var(--login-space-header-end);
    text-align: center;
}

.login-title {
    margin: 0;
    margin-block-end: var(--login-space-title-end);
    font-size: var(--login-font-size-title);
    line-height: var(--login-line-height-title);
    font-weight: 700;
    letter-spacing: var(--login-letter-spacing-title);
}

.login-subtitle {
    margin: 0;
    color: var(--login-color-text-soft);
    font-size: var(--login-font-size-body-sm);
}

.login-content,
.form-login {
    inline-size: 100%;
}

.login-field+.login-field {
    margin-block-start: var(--login-space-field-stack);
}

.login-input {
    display: block;
    inline-size: 100%;
    min-block-size: var(--login-control-min-block-size);
    padding-inline: var(--login-space-control-inline);
    border: 1px solid var(--login-color-border-input);
    border-radius: var(--login-radius-control);
    background: var(--login-color-surface-input);
    color: var(--login-color-text);
    transition:
        border-color var(--login-duration-fast) var(--login-easing-standard),
        background-color var(--login-duration-fast) var(--login-easing-standard),
        box-shadow var(--login-duration-fast) var(--login-easing-standard);
}

.login-input::placeholder {
    color: var(--login-color-text-placeholder);
}

.login-input:hover {
    border-color: var(--login-color-border-input-hover);
    background: var(--login-color-surface-input-hover);
}

.login-input:focus {
    border-color: var(--login-color-accent-strong);
    background: var(--login-color-surface-input-focus);
    box-shadow: var(--login-shadow-input-focus);
}

.login-options {
    display: flex;
    justify-content: center;
    margin-block-start: var(--login-space-options-start);
    margin-block-end: var(--login-space-options-end);
}

.login-checkbox {
    display: inline-flex;
    align-items: center;
    gap: var(--login-space-checkbox-gap);
    user-select: none;
    cursor: pointer;
    color: var(--login-color-text-soft);
    font-size: var(--login-font-size-body-sm);
}

.login-input-checkbox {
    inline-size: var(--login-checkbox-size);
    block-size: var(--login-checkbox-size);
    margin: 0;
    cursor: pointer;
    accent-color: var(--login-color-accent);
}

.login-input-checkbox-label {
    cursor: pointer;
}

.login-submit-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    inline-size: 100%;
    min-block-size: var(--login-control-min-block-size);
    margin-block-start: var(--login-space-button-start);
    padding-inline: var(--login-space-button-inline);
    border: 1px solid var(--login-color-button-border);
    border-radius: var(--login-radius-control);
    background: linear-gradient(180deg, var(--login-color-button-top), var(--login-color-button-bottom));
    color: var(--login-color-button-text);
    font-weight: 600;
    letter-spacing: var(--login-letter-spacing-button);
    cursor: pointer;
    box-shadow: var(--login-shadow-button);
    transition:
        transform var(--login-duration-fast) var(--login-easing-standard),
        box-shadow var(--login-duration-fast) var(--login-easing-standard),
        filter var(--login-duration-fast) var(--login-easing-standard);
}

.login-submit-button:hover {

    background: linear-gradient(180deg,
            var(--login-color-button-top-hover),
            var(--login-color-button-bottom-hover));

    border-color: rgba(255, 100, 120, 0.6);

    box-shadow:
        0 0 18px var(--login-color-button-glow),
        0 16px 36px var(--login-color-button-shadow-hover),
        inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.login-submit-button:active {
    transform: translateY(0);
}

.login-submit-button:focus-visible {
    outline: none;
    box-shadow: var(--login-shadow-button-focus);
}

.login-message-block {
    margin-block-start: var(--login-space-field-stack);
    padding-block: var(--login-space-message-block);
    padding-inline: var(--login-space-message-inline);
    border: 1px solid var(--login-color-danger-border);
    border-radius: var(--login-radius-control);
    background: var(--login-color-danger-bg);
    color: var(--login-color-danger-text);
    text-align: center;
    font-size: var(--login-font-size-caption);
    line-height: var(--login-line-height-body);
}

body .login-input-error {
    border-color: var(--login-color-danger);
    box-shadow: var(--login-shadow-input-error);
}

.sr-only {
    position: absolute;
    overflow: hidden;
    inline-size: 1px;
    block-size: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    white-space: nowrap;
    clip: rect(0, 0, 0, 0);
}

@keyframes login-bg-in {
    from {
        opacity: 0;
        transform: scale(1.04);
    }

    to {
        opacity: var(--login-bg-image-opacity);
        transform: scale(1.02);
    }
}

@media (max-width: 640px) {
    body {
        overflow: auto;
    }

    .login-shell {
        padding: var(--login-space-shell-mobile);
    }

    .login-card {
        border-radius: var(--login-radius-card-mobile);
        padding-block: var(--login-space-card-mobile-block);
        padding-inline: var(--login-space-card-mobile-inline);
    }

    .login-title {
        font-size: var(--login-font-size-title-mobile);
    }
}

@media (prefers-reduced-motion: reduce) {

    .login-page__bg,
    .login-card,
    .login-input,
    .login-submit-button {
        animation: none;
        transition: none;
    }

    .login-page__bg {
        opacity: var(--login-bg-image-opacity);
    }
}