/* ============================================
   CSS Variables (shared with admin theme)
   ============================================ */
:root {
    --color-bg-primary: #1a1a1a;
    --color-bg-secondary: #222222;
    --color-bg-tertiary: #333333;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;
    --color-border: #333333;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-danger: #ef4444;
    --color-success: #22c55e;

    --transition-base: 0.2s ease;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

[data-theme="light"] {
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f5f5;
    --color-bg-tertiary: #e5e5e5;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-border: #e0e0e0;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.frontpage {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* ============================================
   Header
   ============================================ */
.fp-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    height: 64px;
    flex-shrink: 0;
}

.fp-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.fp-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.fp-link {
    color: var(--color-text-secondary);
    font-size: 14px;
    transition: color var(--transition-base);
}

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

.fp-link-btn {
    background: none;
    border: none;
    cursor: pointer;
    font: inherit;
    padding: 0;
}

/* ============================================
   Content
   ============================================ */
.fp-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

/* ============================================
   Footer
   ============================================ */
.fp-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 12px;
    flex-shrink: 0;
}

/* ============================================
   Landing
   ============================================ */
.landing {
    text-align: center;
    width: 100%;
    max-width: 600px;
}

.landing-hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.landing-icon {
    filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.3));
}

.landing-title {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--color-text-primary);
}

.landing-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 400px;
}

.landing-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* ============================================
   Auth
   ============================================ */
.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.auth-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.auth-subtitle {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: calc(-1 * var(--spacing-md));
    margin-bottom: var(--spacing-lg);
}

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

.auth-links {
    text-align: center;
    margin-top: var(--spacing-md);
}

.auth-links a {
    color: var(--color-accent);
    font-size: 14px;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* ============================================
   Form Elements
   ============================================ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-base);
}

.form-input:focus {
    border-color: var(--color-accent);
}

.form-input.is-invalid {
    border-color: var(--color-danger);
}

.form-error {
    font-size: 12px;
    color: var(--color-danger);
}

.form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    accent-color: var(--color-accent);
    width: 16px;
    height: 16px;
}

.form-link {
    font-size: 13px;
    color: var(--color-accent);
}

.form-link:hover {
    text-decoration: underline;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    color: #ffffff;
    background: var(--color-accent);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-base);
    text-decoration: none;
}

.btn:hover {
    background: var(--color-accent-hover);
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 13px;
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 640px) {
    .fp-header {
        padding: var(--spacing-md);
    }

    .fp-content {
        padding: var(--spacing-md);
    }

    .landing-title {
        font-size: 32px;
    }

    .landing-subtitle {
        font-size: 16px;
    }

    .auth-card {
        padding: var(--spacing-lg);
    }
}