:root {
    --primary-50: #faf5ff;
    --primary-100: #f3e8ff;
    --primary-200: #e9d5ff;
    --primary-300: #d8b4fe;
    --primary-400: #c084fc;
    --primary-500: #a855f7;
    --primary-600: #9333ea;
    --primary-700: #7c3aed;
    --primary-800: #6b21a8;
    --primary-900: #581c87;
    --neutral-50: #fafafa;
    --neutral-100: #f4f4f5;
    --neutral-200: #e4e4e7;
    --neutral-300: #d4d4d8;
    --neutral-400: #a1a1aa;
    --neutral-500: #71717a;
    --neutral-600: #52525b;
    --neutral-700: #3f3f46;
    --neutral-800: #27272a;
    --neutral-900: #18181b;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --shadow-lg: 0 20px 45px rgba(24, 24, 27, 0.15);
    --shadow-soft: 0 10px 25px rgba(88, 28, 135, 0.15);
    --radius-2xl: 32px;
    --radius-xl: 24px;
    --radius-lg: 18px;
    --radius-md: 12px;
    --spacing-1: 0.5rem;
    --spacing-2: 0.75rem;
    --spacing-3: 1rem;
    --spacing-4: 1.25rem;
    --spacing-5: 1.75rem;
    --spacing-6: 2rem;
    --spacing-8: 3rem;
    --transition-base: 240ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body.kc-body,
.kc-body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: var(--neutral-700);
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-6) var(--spacing-3);
    position: relative;
    background: transparent;
    /* Reset for pseudo-element */
}

/* Auth Page specific override */
body.kc-body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Gradient AND Base Color combined in fixed layer */
    background: radial-gradient(circle at top, rgba(147, 51, 234, 0.2), transparent 45%), var(--neutral-50);
    z-index: -1;
}

.kc-shell {
    width: 450px;
    /* Fixed dimension as requested */
    max-width: 95vw;
    /* Mobile safety */
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.kc-hero {
    background: linear-gradient(120deg, var(--primary-700), var(--primary-900));
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2);
}

.kc-hero-brand {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.25);
}

.kc-hero-brand img {
    width: 34px;
    height: 34px;
}

.kc-panel {
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.kc-panel-header {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.35rem;
}

.kc-panel h2 {
    font-size: 1.35rem;
    color: var(--neutral-900);
    margin: 0;
}

.kc-description {
    color: var(--neutral-500);
    font-size: 0.95rem;
}

.kc-message {
    border-radius: var(--radius-md);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: 0.95rem;
}

.kc-message.info {
    background: var(--primary-50);
    color: var(--primary-700);
}

.kc-message.error {
    background: rgba(244, 63, 94, 0.08);
    color: var(--accent-rose);
    border: 1px solid rgba(244, 63, 94, 0.25);
}

.kc-error-stack {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.kc-error-intro {
    margin: 0;
    font-size: 0.95rem;
    color: var(--neutral-500);
}

.kc-error-card {
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    border: 1px solid var(--neutral-100);
    background: white;
    box-shadow: 0 12px 30px rgba(17, 24, 39, 0.08);
}

.kc-error-card.primary {
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.08), rgba(88, 28, 135, 0.15));
    border-color: rgba(147, 51, 234, 0.25);
}

.kc-error-card.secondary {
    background: rgba(244, 63, 94, 0.08);
    border-color: rgba(244, 63, 94, 0.25);
}

.kc-error-card p {
    margin: 0;
    color: var(--neutral-800);
    font-weight: 600;
}

.kc-error-label {
    display: inline-block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--neutral-500);
    margin-bottom: 0.35rem;
}

.kc-error-support {
    font-size: 0.85rem;
    color: var(--neutral-500);
    margin: 0;
}

form.kc-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.kc-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.kc-field label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--neutral-700);
}

.kc-field input,
.kc-field select,
.kc-field textarea {
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: border var(--transition-base), box-shadow var(--transition-base);
}

.kc-field input:focus,
.kc-field select:focus,
.kc-field textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.15);
}

.kc-field-error {
    font-size: 0.85rem;
    color: var(--accent-rose);
}

.kc-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.kc-actions .kc-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.kc-btn {
    border: none;
    border-radius: var(--radius-xl);
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.kc-btn.primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    color: white;
    box-shadow: var(--shadow-soft);
    flex: 1 1 100%;
}

.kc-btn.primary:hover {
    transform: translateY(-1px);
}

.kc-btn.secondary {
    background: rgba(147, 51, 234, 0.08);
    color: var(--primary-700);
}

.kc-btn.ghost {
    border: 1px solid var(--neutral-200);
    background: white;
    color: var(--neutral-700);
}

.kc-quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    align-items: center;
}

.kc-btn-link,
.kc-panel a {
    color: var(--primary-700);
    text-decoration: none;
    font-weight: 600;
}

.kc-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    border-radius: var(--radius-xl);
    padding: 0.6rem 1rem;
    border: 1px solid var(--neutral-200);
    background: var(--neutral-50);
    font-weight: 600;
    cursor: pointer;
}

.kc-checkbox input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--primary-600);
}

.kc-social {
    border-top: 1px solid var(--neutral-100);
    padding-top: var(--spacing-4);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.kc-social-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.kc-social button {
    width: 100%;
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
    background: white;
    padding: 0.85rem 1.25rem;
    font-weight: 600;
    color: var(--neutral-700);
}

.kc-badge-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-2);
}

.kc-badge {
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2);
}

@media (max-width: 768px) {
    body.kc-body {
        padding: var(--spacing-3);
    }

    .kc-shell {
        border-radius: var(--radius-xl);
    }

    .kc-hero {
        min-height: 56px;
    }
}