:root {
    color-scheme: dark;
    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

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

.atlas-login-page {
    color: #edf3fb;
    background:
        radial-gradient(circle at 13% 18%, rgba(46, 100, 151, 0.19), transparent 28rem),
        radial-gradient(circle at 85% 76%, rgba(30, 88, 118, 0.14), transparent 32rem),
        linear-gradient(135deg, #060d18 0%, #091522 48%, #07101b 100%);
}

.atlas-login-shell {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(24rem, 32rem);
    align-items: center;
    gap: clamp(3rem, 9vw, 11rem);
    min-height: 100vh;
    max-width: 90rem;
    margin: 0 auto;
    padding: clamp(2rem, 7vw, 7rem);
    overflow: hidden;
}

.atlas-login-shell::before,
.atlas-login-shell::after {
    position: absolute;
    z-index: -2;
    content: "";
    pointer-events: none;
}

.atlas-login-shell::before {
    inset: 0;
    opacity: 0.32;
    background-image:
        linear-gradient(rgba(155, 181, 205, 0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(155, 181, 205, 0.055) 1px, transparent 1px),
        radial-gradient(ellipse 30rem 17rem at 22% 53%, transparent 54%, rgba(139, 174, 198, 0.11) 54.4%, transparent 55.2%),
        radial-gradient(ellipse 42rem 23rem at 22% 53%, transparent 54%, rgba(139, 174, 198, 0.08) 54.3%, transparent 55%);
    background-size: 4rem 4rem, 4rem 4rem, auto, auto;
    mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.65) 57%, transparent 100%);
}

.atlas-login-shell::after {
    top: 8%;
    right: -9rem;
    width: 31rem;
    height: 31rem;
    border: 1px solid rgba(162, 194, 215, 0.08);
    border-radius: 50%;
    box-shadow: 0 0 0 4rem rgba(162, 194, 215, 0.025), 0 0 0 9rem rgba(162, 194, 215, 0.018);
}

.atlas-login-glow {
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    filter: blur(1px);
    pointer-events: none;
}

.atlas-login-glow-primary {
    top: 17%;
    left: 33%;
    width: 1.5rem;
    height: 1.5rem;
    background: rgba(124, 185, 205, 0.34);
    box-shadow: 0 0 4rem 1.8rem rgba(51, 132, 158, 0.11);
}

.atlas-login-glow-secondary {
    right: 8%;
    bottom: 10%;
    width: 0.8rem;
    height: 0.8rem;
    background: rgba(163, 203, 215, 0.22);
    box-shadow: 0 0 3rem 1rem rgba(65, 135, 154, 0.1);
}

.atlas-login-introduction {
    max-width: 35rem;
    padding: 1rem 0;
}

.atlas-login-eyebrow,
.atlas-login-card-kicker {
    margin: 0 0 0.85rem;
    color: #a8c4d3;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    line-height: 1.2;
    text-transform: uppercase;
}

.atlas-login-introduction h1 {
    max-width: 9ch;
    margin: 0;
    color: #f6f9fc;
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 600;
    letter-spacing: -0.06em;
    line-height: 0.98;
}

.atlas-login-tagline {
    max-width: 26rem;
    margin: 1.7rem 0 0;
    color: #b5c6d4;
    font-size: 1.08rem;
    line-height: 1.65;
}

.atlas-login-assurances {
    display: grid;
    gap: 0.7rem;
    margin: 2.75rem 0 0;
    padding: 0;
    color: #92a9b9;
    font-size: 0.84rem;
    letter-spacing: 0.015em;
    list-style: none;
}

.atlas-login-assurances li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.atlas-login-assurances li::before {
    width: 0.38rem;
    height: 0.38rem;
    border: 1px solid #76a8bb;
    border-radius: 50%;
    content: "";
}

.atlas-login-card {
    width: 100%;
    border: 1px solid rgba(180, 207, 224, 0.19);
    border-radius: 1.4rem;
    background: linear-gradient(145deg, rgba(21, 38, 54, 0.94), rgba(11, 24, 37, 0.9));
    box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(225, 239, 249, 0.06);
    backdrop-filter: blur(15px);
}

.atlas-login-card-heading {
    padding: clamp(2rem, 5vw, 3.1rem) clamp(2rem, 5vw, 3.25rem) 1.4rem;
    border-bottom: 1px solid rgba(180, 207, 224, 0.12);
}

.atlas-login-card-heading h2 {
    margin: 0;
    color: #f7fbff;
    font-size: 1.65rem;
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.2;
}

.atlas-login-card-heading > p:last-child {
    margin: 0.85rem 0 0;
    color: #a9bdca;
    font-size: 0.92rem;
    line-height: 1.55;
}

.atlas-login-card-body {
    padding: 1.7rem clamp(2rem, 5vw, 3.25rem) clamp(2rem, 5vw, 3rem);
}

.atlas-login-alert {
    margin: 0 0 1.35rem;
    padding: 0.85rem 1rem;
    border: 1px solid rgba(239, 142, 142, 0.45);
    border-radius: 0.7rem;
    color: #ffe1e1;
    background: rgba(133, 42, 48, 0.28);
    font-size: 0.9rem;
    line-height: 1.45;
}

.atlas-login-form {
    display: grid;
    gap: 1.15rem;
}

.atlas-login-field {
    display: grid;
    gap: 0.5rem;
}

.atlas-login-field label {
    color: #d9e5ed;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.atlas-login-field input {
    width: 100%;
    min-height: 3.1rem;
    padding: 0.75rem 0.9rem;
    border: 1px solid rgba(178, 204, 220, 0.22);
    border-radius: 0.68rem;
    outline: none;
    color: #f4f8fb;
    background: rgba(4, 13, 23, 0.55);
    font: inherit;
    font-size: 0.98rem;
    transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
}

.atlas-login-field input:hover {
    border-color: rgba(178, 204, 220, 0.37);
}

.atlas-login-field input:focus-visible {
    border-color: #83bbd0;
    background: rgba(6, 18, 30, 0.82);
    box-shadow: 0 0 0 3px rgba(102, 178, 204, 0.23);
}

.atlas-login-submit {
    min-height: 3.2rem;
    margin-top: 0.35rem;
    padding: 0.75rem 1rem;
    border: 1px solid #7bb2c6;
    border-radius: 0.68rem;
    color: #06131d;
    background: linear-gradient(135deg, #a6cfdd, #7db6c9);
    box-shadow: 0 0.7rem 1.4rem rgba(69, 137, 159, 0.18);
    cursor: pointer;
    font: inherit;
    font-size: 0.96rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: transform 150ms ease, box-shadow 150ms ease, filter 150ms ease;
}

.atlas-login-submit:hover {
    filter: brightness(1.05);
    box-shadow: 0 0.9rem 1.8rem rgba(69, 137, 159, 0.27);
}

.atlas-login-submit:focus-visible {
    outline: 3px solid rgba(185, 229, 242, 0.8);
    outline-offset: 3px;
}

.atlas-login-submit:active {
    transform: translateY(1px);
}

.atlas-login-note {
    margin: 1.3rem 0 0;
    color: #8299a9;
    font-size: 0.78rem;
    line-height: 1.5;
    text-align: center;
}

@media (max-width: 52rem) {
    .atlas-login-shell {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        max-width: 38rem;
        padding: clamp(2rem, 8vw, 4rem) clamp(1.25rem, 6vw, 2.5rem);
    }

    .atlas-login-introduction {
        max-width: 31rem;
    }

    .atlas-login-introduction h1 {
        max-width: none;
        font-size: clamp(2.8rem, 12vw, 4.5rem);
    }

    .atlas-login-assurances {
        display: flex;
        flex-wrap: wrap;
        column-gap: 1.25rem;
        row-gap: 0.6rem;
        margin-top: 1.8rem;
    }

    .atlas-login-shell::before {
        mask-image: linear-gradient(#000 0%, rgba(0, 0, 0, 0.35) 75%, transparent 100%);
    }
}

@media (max-width: 31rem) {
    .atlas-login-card-heading,
    .atlas-login-card-body {
        padding-right: 1.35rem;
        padding-left: 1.35rem;
    }

    .atlas-login-card-heading {
        padding-top: 1.8rem;
    }

    .atlas-login-assurances {
        display: grid;
    }
}

@media (prefers-reduced-motion: reduce) {
    .atlas-login-field input,
    .atlas-login-submit {
        transition: none;
    }
}