:root {
    color-scheme: light;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --text-primary: #1f2937;
    --text-muted: #6b7280;
    --brand-gradient: linear-gradient(135deg, #3b82f6, #6366f1);
    --shadow-soft: 0 28px 60px -40px rgba(15, 23, 42, 0.45);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Figtree', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #f5f7fb;
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

main {
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

img,
svg {
    display: block;
    max-width: 100%;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

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

.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 16px;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.18), transparent 60%), radial-gradient(circle at bottom left, rgba(37, 99, 235, 0.16), transparent 55%), #edf2fb;
}

.auth-card {
    width: min(100%, 420px);
    background: var(--surface);
    padding: 36px;
    border-radius: 22px;
    box-shadow: 0 24px 50px -35px rgba(30, 64, 175, 0.55);
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.auth-card header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
}

.auth-card header h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.auth-card header p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 700;
    letter-spacing: 0.04em;
    font-size: 1rem;
    color: #2563eb;
}

.auth-brand span {
    color: #6366f1;
}

.form-stack {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field-group label {
    font-size: 0.92rem;
    font-weight: 600;
    color: #374151;
}

.field-group input {
    border: 1px solid #d1d5db;
    border-radius: 12px;
    padding: 12px 14px;
    background: #f9fafb;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.field-group input:focus {
    border-color: #2563eb;
    outline: none;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.field-help {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.form-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: #4b5563;
}

.checkbox {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.checkbox input {
    width: 16px;
    height: 16px;
    border-radius: 5px;
    border: 1px solid #cbd5f5;
    accent-color: #2563eb;
}

.link {
    color: #2563eb;
    font-weight: 600;
}

.primary-button {
    width: 100%;
    border: none;
    border-radius: 12px;
    padding: 12px 20px;
    font-weight: 600;
    color: #fff;
    background: var(--brand-gradient);
    cursor: pointer;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    box-shadow: 0 20px 35px -25px rgba(79, 70, 229, 0.8);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.primary-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 24px 40px -25px rgba(79, 70, 229, 0.85);
}

.auth-footer {
    text-align: center;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.auth-footer a {
    color: #2563eb;
    font-weight: 600;
}

@media (max-width: 520px) {
    .auth-card {
        padding: 28px 22px;
    }

    .auth-card header h1 {
        font-size: 1.55rem;
    }
}