:root {
    --font-sans: "Segoe UI Variable", "Trebuchet MS", "Segoe UI", sans-serif;
    --color-bg-deep: #0f172a;
    --color-bg-mid: #17243a;
    --color-surface: rgba(255, 255, 255, 0.92);
    --color-surface-alt: rgba(255, 255, 255, 0.14);
    --color-border: rgba(148, 163, 184, 0.22);
    --color-text: #182131;
    --color-text-soft: #5f6b7f;
    --color-ink-light: #f8fafc;
    --color-primary: #c26a2d;
    --color-primary-soft: rgba(194, 106, 45, 0.14);
    --color-danger: #a63c3c;
    --color-danger-soft: rgba(166, 60, 60, 0.12);
    --color-success: #1f8a63;
    --color-success-soft: rgba(31, 138, 99, 0.12);
    --shadow-lg: 0 28px 70px rgba(15, 23, 42, 0.22);
    --radius-xl: 32px;
    --radius-lg: 22px;
    --radius-md: 16px;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: var(--font-sans);
}

.auth-body {
    min-height: 100vh;
    color: var(--color-text);
    background:
        radial-gradient(circle at top left, rgba(194, 106, 45, 0.18), transparent 24%),
        linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-bg-mid) 44%, #edf2f8 44%, #edf2f8 100%);
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem;
}

.auth-stage {
    width: min(1180px, 100%);
    display: grid;
    grid-template-columns: minmax(320px, 0.95fr) minmax(0, 1.1fr);
    overflow: hidden;
    border-radius: var(--radius-xl);
    background: var(--color-surface);
    box-shadow: var(--shadow-lg);
}

.auth-stage__aside {
    padding: 2.5rem;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 18%),
        linear-gradient(180deg, #10182b 0%, #16233a 100%);
    color: var(--color-ink-light);
}

.auth-stage__eyebrow,
.auth-card__eyebrow,
.auth-stage__box-label,
.auth-preview__label {
    display: inline-block;
    margin: 0 0 0.85rem;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.auth-stage__eyebrow,
.auth-card__eyebrow {
    color: var(--color-primary);
}

.auth-stage__title {
    margin: 0 0 1rem;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.02;
}

.auth-stage__text,
.auth-stage__box-text,
.auth-card__text,
.auth-preview__link {
    margin: 0;
    line-height: 1.75;
}

.auth-stage__text {
    color: #dbe5f1;
    max-width: 30ch;
}

.auth-stage__box {
    margin-top: 2rem;
    padding: 1.35rem;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: var(--radius-lg);
    background: var(--color-surface-alt);
}

.auth-stage__box-label {
    color: #94a3b8;
}

.auth-stage__box-text {
    color: #d7e1ee;
}

.auth-stage__links {
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.auth-stage__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.95rem 1.1rem;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
}

.auth-stage__link--light {
    background: var(--color-primary);
    color: #131b2a;
}

.auth-stage__link--ghost {
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-ink-light);
}

.auth-stage__main {
    display: grid;
    align-items: center;
    padding: 2.5rem;
}

.auth-card {
    width: min(460px, 100%);
    margin-inline: auto;
}

.auth-card__header {
    margin-bottom: 1.5rem;
}

.auth-card__title {
    margin: 0 0 0.8rem;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.auth-card__text {
    color: var(--color-text-soft);
}

.auth-form {
    display: grid;
    gap: 1rem;
}

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

.auth-field__label {
    font-weight: 700;
    color: var(--color-text);
}

.auth-field__input {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.88);
    color: var(--color-text);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.auth-field__input:focus {
    border-color: rgba(194, 106, 45, 0.46);
    box-shadow: 0 0 0 4px rgba(194, 106, 45, 0.12);
}

.auth-button {
    padding: 1rem 1.1rem;
    border: 0;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #c26a2d 0%, #d8833c 100%);
    color: #fffaf5;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}

.auth-alert,
.auth-preview {
    margin-bottom: 1rem;
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
}

.auth-alert--error {
    color: var(--color-danger);
    background: var(--color-danger-soft);
}

.auth-alert--success {
    color: var(--color-success);
    background: var(--color-success-soft);
}

.auth-preview {
    border: 1px solid rgba(194, 106, 45, 0.18);
    background: var(--color-primary-soft);
}

.auth-preview--compact {
    margin-bottom: 1.25rem;
}

.auth-preview__label {
    color: #8d4d1f;
}

.auth-preview__link {
    word-break: break-word;
    color: var(--color-text);
}

.auth-card__footer {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.35rem;
}

.auth-card__footer a {
    color: var(--color-text-soft);
    text-decoration: none;
}

.auth-card__footer a:hover {
    color: var(--color-primary);
}

@media (max-width: 960px) {
    .auth-stage {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .auth-shell,
    .auth-stage__aside,
    .auth-stage__main {
        padding: 1rem;
    }

    .auth-card__footer,
    .auth-stage__links {
        flex-direction: column;
    }
}