:root {
    --primary-gradient: linear-gradient(135deg, #0076a8 0%, #004d6d 100%);
    --accent-gradient: linear-gradient(135deg, #00a9ce 0%, #0086a8 100%);
    --matlab-gradient: linear-gradient(135deg, #0076a8 0%, #ff7f00 100%);
    --primary-color: #0076a8;
    --primary-hover: #005a82;
    --secondary-color: #ff7f00;
    --secondary-hover: #e67300;
    --text-primary: #1a2332;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --text-white: #ffffff;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --border-color: #e2e8f0;
    --border-light: #eef2f6;
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --transition-fast: all 0.18s ease;
    --transition-normal: all 0.28s ease;
}

body.auth-body {
    background: radial-gradient(circle at 10% 20%, rgba(0, 118, 168, 0.12), transparent 35%),
                radial-gradient(circle at 90% 10%, rgba(255, 127, 0, 0.12), transparent 35%),
                linear-gradient(135deg, #f8fbff 0%, #eef3f8 100%);
    min-height: 100vh;
    color: var(--text-primary);
}

body.auth-body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: radial-gradient(600px at 20% 20%, rgba(0, 118, 168, 0.08), transparent 55%),
                radial-gradient(700px at 80% 0%, rgba(255, 127, 0, 0.08), transparent 45%);
    pointer-events: none;
    z-index: 0;
}

.skip-to-content {
    position: absolute;
    left: -9999px;
    top: 0;
    background: #0f1419;
    color: var(--text-white);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    z-index: 10000;
}

.skip-to-content:focus {
    left: 16px;
    top: 16px;
    outline: 3px solid var(--primary-color);
}

.auth-hero {
    padding: 140px 0 60px;
    position: relative;
    overflow: hidden;
}

.auth-hero .hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.auth-hero .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(0, 118, 168, 0.1);
    color: var(--primary-color);
    font-weight: 700;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 12px;
}

.auth-hero h1 {
    font-size: 48px;
    line-height: 1.1;
    margin: 18px 0 12px;
    font-weight: 800;
    background: linear-gradient(135deg, #e5f2ff 0%, #c8e4ff 45%, #7ac8ff 90%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.auth-hero p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.92);
    max-width: 760px;
    margin: 0 auto;
    text-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
}

.auth-page {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 10px auto 80px;
    padding: 0 24px;
}

.auth-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 28px;
    align-items: stretch;
}

.auth-panel {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(0, 118, 168, 0.1);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.auth-panel::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(145deg, rgba(0, 118, 168, 0.06), rgba(255, 127, 0, 0.04));
    pointer-events: none;
}

.auth-panel > * {
    position: relative;
    z-index: 2;
}

.auth-info {
    padding: 38px 36px;
}

.info-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--primary-gradient);
    color: var(--text-white);
    border-radius: var(--radius-full);
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(0, 118, 168, 0.2);
}

.auth-info h2 {
    margin: 20px 0 12px;
    font-size: 30px;
    line-height: 1.3;
}

.auth-info p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 20px;
}

.auth-benefits {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 14px;
}

.auth-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(0, 118, 168, 0.06);
    border: 1px solid rgba(0, 118, 168, 0.1);
    padding: 12px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
}

.auth-benefits i {
    color: var(--primary-color);
}

.auth-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 8px;
}

.metric {
    background: #0f1419;
    color: var(--text-white);
    border-radius: var(--radius-md);
    padding: 16px 14px;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.metric-number {
    font-size: 22px;
    font-weight: 800;
    display: block;
}

.metric-label {
    color: rgba(255, 255, 255, 0.78);
    font-size: 13px;
}

.auth-form-panel {
    padding: 32px 30px 30px;
}

.auth-form-header .eyebrow {
    background: rgba(255, 127, 0, 0.12);
    color: var(--secondary-color);
}

.auth-form-header h2 {
    font-size: 28px;
    margin: 12px 0 6px;
}

.auth-form-header p {
    color: var(--text-secondary);
}

.auth-form {
    margin-top: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.auth-form .layui-form-item {
    margin-bottom: 14px;
}

.auth-form .layui-form-item .layui-input {
    height: 48px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding: 12px 14px;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

.auth-form .layui-form-item .layui-form-checkbox[lay-skin="primary"] {
    margin-top: 0;
}

.form-field label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.input-shell {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.input-shell .input-icon {
    position: absolute;
    left: 12px;
    color: var(--text-light);
    font-size: 14px;
}

.input-shell input {
    flex: 1 1 auto;
    min-width: 0;
    width: 100%;
    height: 48px;
    padding: 12px 14px 12px 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
    transition: var(--transition-normal);
    color: var(--text-primary);
}

.input-shell.has-action input {
    padding-right: 52px;
}

.input-shell input:focus {
    outline: none;
    border-color: rgba(0, 118, 168, 0.6);
    box-shadow: 0 0 0 3px rgba(0, 118, 168, 0.14);
}

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

.field-action {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-light);
    padding: 6px;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.field-action:hover,
.field-action.active {
    color: var(--primary-color);
    background: rgba(0, 118, 168, 0.08);
}

.captcha-row {
    display: grid;
    grid-template-columns: 1fr 170px;
    gap: 12px;
    align-items: stretch;
}

.captcha-row .input-shell {
    min-width: 0;
}

.captcha-visual {
    position: relative;
    height: 52px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0, 118, 168, 0.12), rgba(255, 127, 0, 0.08));
    border: 1px solid rgba(0, 118, 168, 0.18);
    box-shadow: 0 10px 30px rgba(0, 118, 168, 0.15);
    cursor: pointer;
    transition: var(--transition-fast);
}

.captcha-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.5), transparent 40%),
                radial-gradient(circle at 80% 20%, rgba(0, 118, 168, 0.25), transparent 45%),
                linear-gradient(120deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0));
    pointer-events: none;
}

.captcha-visual:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 34px rgba(0, 118, 168, 0.22);
    border-color: rgba(0, 118, 168, 0.32);
}

.captcha-visual:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 118, 168, 0.25), 0 10px 30px rgba(0, 118, 168, 0.18);
    border-color: rgba(0, 118, 168, 0.42);
}

.captcha-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
    border: none;
    display: block;
    filter: contrast(105%);
}

.form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.checkbox {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox input {
    width: 16px;
    height: 16px;
}

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

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

.primary-btn {
    margin-top: 4px;
    height: 50px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--primary-gradient);
    color: var(--text-white);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 34px rgba(0, 118, 168, 0.18);
}

.form-footer {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-footer .muted {
    color: var(--text-secondary);
}

.two-col {
    display: grid;
    grid-template-columns: 1fr 140px;
    gap: 12px;
    align-items: center;
}

.ghost-btn {
    height: 48px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 118, 168, 0.3);
    background: rgba(0, 118, 168, 0.06);
    color: var(--primary-color);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
}

.ghost-btn:hover {
    background: rgba(0, 118, 168, 0.12);
    border-color: rgba(0, 118, 168, 0.5);
}

.auth-note {
    font-size: 13px;
    color: var(--text-light);
    margin-top: -4px;
}

.divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 6px 0;
    color: var(--text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

@media (max-width: 1100px) {
    .auth-layout {
        grid-template-columns: 1fr;
    }

    .auth-info {
        order: 2;
    }

    .auth-form-panel {
        order: 1;
    }

    .auth-hero {
        padding: 120px 0 40px;
    }
}

@media (max-width: 768px) {
    .auth-hero h1 {
        font-size: 32px;
    }

    .auth-hero p {
        font-size: 15px;
    }

    .auth-benefits {
        grid-template-columns: 1fr;
    }

    .auth-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .captcha-row,
    .two-col {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}