:root {
    --auth-brand: #111111;
    --auth-brand-hover: #000000;
    --auth-accent: #111111;
    --auth-btn-gradient-start: #222222;
    --auth-btn-gradient-end: #111111;
    --auth-btn-gradient-hover-start: #111111;
    --auth-btn-gradient-hover-end: #000000;
    --auth-btn-shadow:
        0 8px 10px -6px rgba(0, 0, 0, 0.2),
        0 20px 25px -5px rgba(0, 0, 0, 0.25);
    --auth-ink: #1d2d35;
    --auth-muted: #9eabb2;
    --auth-panel-bg: #f7f8fa;
    --auth-input-bg: #edf2f7;
}

* {
    box-sizing: border-box;
}

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

body.auth-page {
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    background: var(--auth-panel-bg);
    color: var(--auth-ink);
}

.auth-shell {
    display: flex;
    min-height: 100vh;
}

.auth-visual {
    flex: 1 1 52%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, #e8ecef 0%, #e5e5e5 50%, #ebebeb 100%);
    overflow: hidden;
}

.auth-visual img {
    width: 100%;
    max-width: 720px;
    height: auto;
    object-fit: contain;
    display: block;
}

.auth-form-panel {
    flex: 1 1 48%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 2rem;
    background: var(--auth-panel-bg);
}

.auth-form-wrap {
    width: 100%;
    max-width: 420px;
}

.auth-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--auth-accent);
    text-decoration: none;
    margin-bottom: 1.25rem;
}

.auth-back-link:hover {
    color: var(--auth-brand);
}

.auth-heading {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.15;
    margin: 0 0 0.75rem;
    color: var(--auth-ink);
}

.auth-heading .highlight {
    color: var(--auth-brand);
}

.auth-subtitle {
    font-size: 0.95rem;
    color: var(--auth-muted);
    margin: 0 0 2rem;
    line-height: 1.5;
}

.auth-subtitle strong {
    color: var(--auth-ink);
    font-weight: 600;
}

.auth-alert {
    border-radius: 12px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

.field-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--auth-muted);
    margin-bottom: 0.5rem;
}

.field-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.field-label-row .field-label {
    margin-bottom: 0;
}

.auth-link {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--auth-accent);
    text-decoration: none;
}

.auth-link:hover {
    color: var(--auth-brand);
    text-decoration: underline;
}

.input-group-auth {
    position: relative;
    margin-bottom: 1.35rem;
}

.input-group-auth .field-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.15rem;
    color: var(--auth-accent);
    pointer-events: none;
    z-index: 2;
}

.input-group-auth .toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: transparent;
    color: var(--auth-muted);
    padding: 0;
    font-size: 1.1rem;
    cursor: pointer;
    z-index: 2;
}

.input-group-auth .toggle-password:hover {
    color: var(--auth-ink);
}

.auth-input {
    width: 100%;
    height: 52px;
    padding: 0 2.75rem 0 2.85rem;
    border: none;
    border-radius: 14px;
    background: var(--auth-input-bg);
    box-shadow: none;
    font-size: 0.95rem;
    color: var(--auth-ink);
    transition: box-shadow 0.2s ease, background 0.2s ease;
}

.auth-input::placeholder {
    color: #b0bcc9;
}

.auth-input:focus {
    outline: none;
    background: #e8eef4;
    box-shadow: 0 0 0 2px rgba(0, 137, 153, 0.2);
}

.input-group-auth.has-toggle .auth-input {
    padding-right: 2.85rem;
}

.auth-input-otp {
    text-align: center;
    letter-spacing: 0.45em;
    font-size: 1.2rem;
    font-weight: 600;
    padding-left: 1rem;
    padding-right: 1rem;
}

.field-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--auth-muted);
    margin-top: -0.85rem;
    margin-bottom: 1.25rem;
}

.auth-form-wrap button.btn-auth-primary,
.auth-form-wrap .btn-auth-primary {
    width: 100%;
    height: 52px;
    margin-top: 0.5rem;
    border: none;
    border-radius: 9999px;
    background-color: var(--auth-btn-gradient-start);
    background-image: linear-gradient(
        90deg,
        var(--auth-btn-gradient-start) 0%,
        var(--auth-btn-gradient-end) 100%
    );
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: var(--auth-btn-shadow);
    transition: background-image 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.auth-form-wrap button.btn-auth-primary:hover:not(:disabled),
.auth-form-wrap .btn-auth-primary:hover:not(:disabled) {
    background-color: var(--auth-btn-gradient-hover-start);
    background-image: linear-gradient(
        90deg,
        var(--auth-btn-gradient-hover-start) 0%,
        var(--auth-btn-gradient-hover-end) 100%
    );
    color: #fff;
}

.auth-form-wrap button.btn-auth-primary:active:not(:disabled),
.auth-form-wrap .btn-auth-primary:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow:
        0 4px 6px -4px rgba(0, 137, 153, 0.2),
        0 10px 14px -4px rgba(0, 137, 153, 0.2);
}

.auth-form-wrap button.btn-auth-primary:disabled,
.auth-form-wrap .btn-auth-primary:disabled {
    opacity: 0.75;
    cursor: not-allowed;
}

.auth-footer {
    margin-top: 2.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--auth-muted);
}

.auth-links-row {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--auth-muted);
}

.auth-links-row .auth-link {
    font-size: 0.875rem;
}

.auth-links-row .divider {
    margin: 0 0.5rem;
    color: #c5cdd8;
}

@media (max-width: 991.98px) {
    .auth-shell {
        flex-direction: column;
    }

    .auth-visual {
        flex: none;
        min-height: 280px;
        padding: 1.5rem 1rem;
    }

    .auth-visual img {
        max-width: 420px;
    }

    .auth-form-panel {
        flex: 1;
        padding: 2rem 1.25rem 2.5rem;
    }

    .auth-heading {
        font-size: 2rem;
    }
}