/**
 * AnnounceitOnce Frontend Styles
 * Public-facing stylesheet for subscription forms and newsletters
 */

/* CSS Custom Properties with Fallbacks */
:root {
    --itonce-primary: #2271b1;
    --itonce-primary-dark: #135e96;
    --itonce-success: #28a745;
    --itonce-error: #dc3545;
    --itonce-warning: #ffc107;
    --itonce-info: #17a2b8;
    --itonce-white: #ffffff;
    --itonce-gray-50: #f9fafb;
    --itonce-gray-100: #f3f4f6;
    --itonce-gray-200: #e5e7eb;
    --itonce-gray-300: #d1d5db;
    --itonce-gray-400: #9ca3af;
    --itonce-gray-500: #6b7280;
    --itonce-gray-600: #4b5563;
    --itonce-gray-700: #374151;
    --itonce-gray-800: #1f2937;
    --itonce-gray-900: #111827;
    --itonce-text: #1f2937;
    --itonce-text-muted: #6b7280;
    --itonce-border: #e5e7eb;
    --itonce-surface: #ffffff;
    --itonce-success-bg: #d1fae5;
    --itonce-error-bg: #fef2f2;
    --itonce-warning-bg: #fef3c7;
    --itonce-info-bg: #dbeafe;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --radius-base: 0.375rem;
    --radius-lg: 0.5rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --transition-fast: 0.15s ease-in-out;
}

/* AnnounceitOnce Subscription Form Wrapper */
.announceitonce-subscribe-form-wrapper {
    max-width: 500px;
    margin: var(--space-6, 1.5rem) 0;
    background: var(--itonce-surface, #ffffff);
    border: 1px solid var(--itonce-border, #e5e7eb);
    border-radius: var(--radius-lg, 0.5rem);
    box-shadow: var(--shadow-base, 0 1px 3px 0 rgba(0, 0, 0, 0.1));
    overflow: hidden;
}

/* Form Structure */
.announceitonce-form {
    padding: var(--space-6, 1.5rem);
}

.announceitonce-form .form-title {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--itonce-text, #1f2937);
    margin: 0 0 var(--space-4, 1rem) 0;
    text-align: center;
}

/* Form Fields */
.announceitonce-form .form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--space-4, 1rem);
}

.announceitonce-form .form-input {
    width: 100%;
    padding: var(--space-3, 0.75rem);
    font-size: var(--font-size-base, 1rem);
    color: var(--itonce-text, #1f2937);
    background: var(--itonce-white, #ffffff);
    border: 1px solid var(--itonce-border, #e5e7eb);
    border-radius: var(--radius-base, 0.375rem);
    transition: border-color var(--transition-fast, 0.15s ease-in-out), 
                box-shadow var(--transition-fast, 0.15s ease-in-out);
    box-sizing: border-box;
}

.announceitonce-form .form-input:focus {
    outline: none;
    border-color: var(--itonce-primary, #2271b1);
    box-shadow: 0 0 0 1px var(--itonce-primary, #2271b1);
}

.announceitonce-form .form-input:invalid {
    border-color: var(--itonce-error, #dc3545);
}

.announceitonce-form .form-input::placeholder {
    color: var(--itonce-text-muted, #6b7280);
}

/* Submit Button */
.announceitonce-form .form-submit {
    width: 100%;
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    font-size: var(--font-size-base, 1rem);
    font-weight: var(--font-weight-medium, 500);
    color: var(--itonce-white, #ffffff);
    background: var(--itonce-primary, #2271b1);
    border: none;
    border-radius: var(--radius-base, 0.375rem);
    cursor: pointer;
    transition: background-color var(--transition-fast, 0.15s ease-in-out),
                transform var(--transition-fast, 0.15s ease-in-out);
}

.announceitonce-form .form-submit:hover {
    background: var(--itonce-primary-dark, #135e96);
    transform: translateY(-1px);
}

.announceitonce-form .form-submit:active {
    transform: translateY(0);
}

.announceitonce-form .form-submit:disabled {
    background: var(--itonce-gray-400, #9ca3af);
    cursor: not-allowed;
    transform: none;
}

/* Form Messages */
.announceitonce-form .form-message {
    margin-top: var(--space-4, 1rem);
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-base, 0.375rem);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: var(--font-weight-medium, 500);
    text-align: center;
}

.announceitonce-form .form-message.success {
    background: var(--itonce-success-bg, #d1fae5);
    color: var(--itonce-success, #28a745);
    border: 1px solid var(--itonce-success, #28a745);
}

.announceitonce-form .form-message.error {
    background: var(--itonce-error-bg, #fef2f2);
    color: var(--itonce-error, #dc3545);
    border: 1px solid var(--itonce-error, #dc3545);
}

/* Newsletter Form Styles (for announce_newsletter_form shortcode) */
.announce-newsletter-form {
    max-width: 400px;
    padding: var(--space-6, 1.5rem);
    background: var(--itonce-white, #ffffff);
    border-radius: var(--radius-lg, 0.5rem);
    box-shadow: var(--shadow-base, 0 1px 3px 0 rgba(0, 0, 0, 0.1));
    border: 1px solid var(--itonce-gray-200, #e5e7eb);
    margin: var(--space-6, 1.5rem) 0;
}

.announce-form-title {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: var(--font-weight-semibold, 600);
    color: var(--itonce-gray-900, #111827);
    margin: 0 0 var(--space-4, 1rem) 0;
    text-align: center;
}

.announce-form-group {
    margin-bottom: var(--space-4, 1rem);
}

.announce-form-label {
    display: block;
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: var(--font-weight-medium, 500);
    color: var(--itonce-gray-700, #374151);
    margin-bottom: var(--space-2, 0.5rem);
}

.announce-form-input {
    width: 100%;
    padding: var(--space-3, 0.75rem);
    font-size: var(--font-size-base, 1rem);
    border: 1px solid var(--itonce-gray-300, #d1d5db);
    border-radius: var(--radius-base, 0.375rem);
    transition: border-color var(--transition-fast, 0.15s ease-in-out);
    box-sizing: border-box;
}

.announce-form-input:focus {
    outline: none;
    border-color: var(--itonce-primary, #2271b1);
    box-shadow: 0 0 0 1px var(--itonce-primary, #2271b1);
}

.announce-form-button {
    width: 100%;
    padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
    background: var(--itonce-primary, #2271b1);
    color: var(--itonce-white, #ffffff);
    border: none;
    border-radius: var(--radius-base, 0.375rem);
    font-weight: var(--font-weight-medium, 500);
    cursor: pointer;
    transition: background-color var(--transition-fast, 0.15s ease-in-out);
}

.announce-form-button:hover {
    background: var(--itonce-primary-dark, #135e96);
}

.announce-form-button:disabled {
    background: var(--itonce-gray-400, #9ca3af);
    cursor: not-allowed;
}

.announce-form-message {
    margin-top: var(--space-4, 1rem);
    padding: var(--space-3, 0.75rem);
    border-radius: var(--radius-base, 0.375rem);
    font-size: var(--font-size-sm, 0.875rem);
    text-align: center;
}

.announce-form-message.success {
    background: var(--itonce-success-bg, #d1fae5);
    color: var(--itonce-success, #28a745);
    border: 1px solid var(--itonce-success, #28a745);
}

.announce-form-message.error {
    background: var(--itonce-error-bg, #fef2f2);
    color: var(--itonce-error, #dc3545);
    border: 1px solid var(--itonce-error, #dc3545);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .announceitonce-subscribe-form-wrapper,
    .announce-newsletter-form {
        margin: var(--space-4, 1rem) 0;
        padding: var(--space-4, 1rem);
        max-width: 100%;
    }
    
    .announceitonce-form,
    .announce-newsletter-form {
        padding: var(--space-4, 1rem);
    }
    
    .form-fields {
        gap: var(--space-3, 0.75rem);
    }
}

/* Small screens adjustments */
@media (max-width: 480px) {
    .announceitonce-subscribe-form-wrapper,
    .announce-newsletter-form {
        margin: var(--space-3, 0.75rem) 0;
        padding: var(--space-3, 0.75rem);
    }
    
    .form-title,
    .announce-form-title {
        font-size: var(--font-size-base, 1rem);
    }
    
    .form-input,
    .announce-form-input,
    .form-submit,
    .announce-form-button {
        padding: var(--space-3, 0.75rem);
        font-size: var(--font-size-sm, 0.875rem);
    }
}

/* Accessibility Improvements */
.announceitonce-form .form-input:focus-visible,
.announce-form-input:focus-visible {
    outline: 2px solid var(--itonce-primary, #2271b1);
    outline-offset: 2px;
}

.announceitonce-form .form-submit:focus-visible,
.announce-form-button:focus-visible {
    outline: 2px solid var(--itonce-white, #ffffff);
    outline-offset: 2px;
}

/* Loading State */
.announceitonce-form .form-submit.loading,
.announce-form-button.loading {
    opacity: 0.7;
    position: relative;
    pointer-events: none;
}

.announceitonce-form .form-submit.loading::after,
.announce-form-button.loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    margin: auto;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Form Validation Styling */
.announce-field-invalid {
    border-color: var(--itonce-error, #dc3545) !important;
    box-shadow: 0 0 0 1px var(--itonce-error, #dc3545) !important;
}

.announce-field-valid {
    border-color: var(--itonce-success, #28a745) !important;
    box-shadow: 0 0 0 1px var(--itonce-success, #28a745) !important;
}

.announce-field-error {
    color: var(--itonce-error, #dc3545);
    font-size: var(--font-size-sm, 0.875rem);
    margin-top: var(--space-2, 0.5rem);
    display: flex;
    align-items: center;
    gap: var(--space-1, 0.25rem);
}

.announce-field-error:before {
    content: " ";
    font-size: var(--font-size-sm, 0.875rem);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .announceitonce-form .form-input,
    .announce-form-input {
        border-width: 2px;
    }
    
    .announceitonce-form .form-input:focus,
    .announce-form-input:focus {
        box-shadow: 0 0 0 2px var(--itonce-primary, #2271b1);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --itonce-surface: #1f2937;
        --itonce-text: #f9fafb;
        --itonce-text-muted: #d1d5db;
        --itonce-border: #374151;
        --itonce-gray-100: #374151;
        --itonce-gray-200: #4b5563;
        --itonce-gray-300: #6b7280;
        --itonce-success-bg: #064e3b;
        --itonce-error-bg: #7f1d1d;
        --itonce-warning-bg: #78350f;
        --itonce-info-bg: #1e3a8a;
    }
}

/* Print Styles */
@media print {
    .announceitonce-subscribe-form-wrapper,
    .announce-newsletter-form {
        display: none;
    }
}