:root {
    --surface: rgba(255, 255, 255, 0.9);
    --surface-strong: #ffffff;
    --border: rgba(20, 36, 27, 0.1);
    --text: #132019;
    --muted: #617267;
    --accent: #4ea7ff;
    --accent-dark: #256fbe;
    --danger: #b54a4a;
    --danger-soft: rgba(181, 74, 74, 0.11);
    --shadow-lg: 0 28px 60px rgba(19, 32, 25, 0.12);
    --shadow-md: 0 16px 34px rgba(19, 32, 25, 0.08);
}

* { box-sizing: border-box; }

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
}

body.auth-body {
    min-height: 100vh;
    padding: 24px;
    background:
        radial-gradient(circle at top left, rgba(78, 167, 255, 0.12), transparent 25%),
        radial-gradient(circle at right 10%, rgba(199, 135, 31, 0.08), transparent 18%),
        linear-gradient(180deg, #f8fbf8 0%, #edf4ee 100%);
}

.auth-shell {
    width: min(1180px, 100%);
    margin: 0 auto;
    min-height: calc(100vh - 48px);
    display: grid;
    grid-template-columns: minmax(320px, 1.1fr) minmax(320px, 0.9fr);
    gap: 28px;
    align-items: stretch;
}

.auth-showcase,
.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 32px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(12px);
}

.auth-showcase {
    padding: 42px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 640px;
}

.auth-eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    font-weight: 700;
}

.auth-showcase h1,
.auth-card h2 { margin: 0; line-height: 1.06; }

.auth-showcase h1 {
    max-width: 12ch;
    font-size: clamp(2.2rem, 4vw, 4.2rem);
}

.auth-copy,
.auth-card-head p,
.auth-link,
.auth-feature-card span {
    color: var(--muted);
    line-height: 1.65;
}

.auth-copy { max-width: 56ch; margin: 18px 0 0; }

.auth-feature-list {
    display: grid;
    gap: 14px;
    margin-top: 34px;
}

.auth-feature-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 18px 20px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.68);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.auth-card {
    padding: 34px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-card-head {
    margin-bottom: 24px;
    overflow: hidden;
}
.auth-card-logo {
    display: block;
    width: min(100%, 300px);
    height: auto;
    margin: 0 auto 14px;
    object-fit: contain;
}
.auth-card-head p { margin: 12px 0 0; }
.auth-form, .secondary-form { display: flex; flex-direction: column; }

.auth-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.auth-field label { font-size: 0.92rem; font-weight: 600; }

.auth-field input {
    width: 100%;
    min-height: 50px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--surface-strong);
    color: var(--text);
    padding: 0 16px;
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.auth-field input:focus {
    border-color: rgba(78, 167, 255, 0.46);
    box-shadow: 0 0 0 4px rgba(78, 167, 255, 0.12);
}

.auth-password-wrapper {
    position: relative;
}

.auth-password-wrapper input {
    padding-right: 52px;
}

.auth-password-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--muted);
    cursor: pointer;
    border-radius: 10px;
    padding: 0;
    transition: background .18s ease, color .18s ease;
}

.auth-password-toggle:hover,
.auth-password-toggle:focus-visible {
    background: rgba(78, 167, 255, 0.1);
    color: var(--accent);
    outline: none;
}

.auth-password-toggle svg {
    width: 20px;
    height: 20px;
    pointer-events: none;
}

.auth-password-toggle .icon-eye-slash { display: none; }
.auth-password-toggle.is-visible .icon-eye { display: none; }
.auth-password-toggle.is-visible .icon-eye-slash { display: block; }

.auth-caps-warning {
    display: block;
    margin-top: 6px;
    color: #c7871f;
    font-size: 0.82rem;
    font-weight: 600;
}

.auth-caps-warning[hidden] {
    display: none;
}

.auth-btn {
    min-height: 50px;
    border: 1px solid transparent;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--accent) 0%, #7cc6ff 100%);
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 14px 30px rgba(78, 167, 255, 0.24);
}

.auth-btn-secondary {
    margin-top: 12px;
    background: var(--surface-strong);
    color: var(--accent-dark);
    border-color: rgba(78, 167, 255, 0.18);
    box-shadow: none;
}

.auth-alert {
    margin-bottom: 16px;
    padding: 14px 16px;
    border-radius: 18px;
    background: var(--danger-soft);
    color: var(--danger);
    border: 1px solid rgba(181, 74, 74, 0.14);
}

.auth-link { margin-top: 20px; }

.auth-link a {
    color: var(--accent);
    font-weight: 700;
    text-decoration: none;
}

.field-error { color: var(--danger); font-size: 0.82rem; }

@media (max-width: 980px) {
    .auth-shell {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .auth-showcase {
        min-height: auto;
        padding: 30px;
    }

    .auth-showcase h1 { max-width: none; }
}

@media (max-width: 640px) {
    body.auth-body { padding: 16px; }
    .auth-showcase, .auth-card { padding: 22px; border-radius: 24px; }
}

.theme-toggle-bar {
    width: min(1180px, 100%);
    margin: 0 auto 18px;
    display: flex;
    justify-content: flex-end;
}

.theme-toggle-btn {
    height: 42px;
    padding: 0 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface-strong);
    color: var(--text);
    cursor: pointer;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.theme-toggle-btn:hover {
    border-color: rgba(78, 167, 255, 0.46);
}

html.theme-dark .auth-body {
    --surface: rgba(13, 19, 38, 0.78);
    --surface-strong: #0d1326;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f4f7ff;
    --muted: #8d97b5;
    --accent: #4ea7ff;
    --accent-dark: #7cc6ff;
    --danger: #ff6b6b;
    --danger-soft: rgba(255, 107, 107, 0.14);
    --shadow-lg: 0 28px 60px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 16px 34px rgba(0, 0, 0, 0.30);

    background:
        radial-gradient(circle at top left, rgba(78, 167, 255, 0.18), transparent 28%),
        radial-gradient(circle at right 10%, rgba(139, 92, 246, 0.12), transparent 22%),
        linear-gradient(180deg, #050816 0%, #0b1020 100%);
}

html.theme-dark .auth-body .auth-feature-card {
    background: rgba(13, 19, 38, 0.6);
}

html.theme-dark .auth-body .auth-field input::placeholder {
    color: var(--muted);
}

html.theme-dark .auth-body .auth-btn-secondary {
    color: var(--accent);
    border-color: rgba(78, 167, 255, 0.28);
}

html.theme-dark .auth-body .auth-alert {
    background: rgba(255, 107, 107, 0.12);
    border-color: rgba(255, 107, 107, 0.22);
}

html.theme-dark .auth-body .auth-caps-warning {
    color: #f4c168;
}