/**
 * Moving Cost Estimator Styles
 *
 * WCAG AA compliant, mobile-first, theme-driven design.
 * Uses CSS variables from config for easy customization.
 *
 * @package Moving_Cost_Estimator
 */

/* ========================================================================
   CSS Variables (Theme Tokens)
   ======================================================================== */

.mce-calculator {
    /* Colors from config */
    --mce-bg: #ffffff;
    --mce-panel: #f8f9fb;
    --mce-text: #0b0d12;
    --mce-muted: #6b7280;
    --mce-primary: #0ea5a4;
    --mce-primaryText: #0b0d12;
    --mce-accent: #f59e0b;
    --mce-danger: #ef4444;
    --mce-success: #10b981;
    --mce-border: #e5e7eb;

    /* Spacing & Typography */
    --mce-radius: 12px;
    --mce-gap: 12px;
    --mce-font-scale: 1;

    /* Computed values */
    --mce-focus-ring: 0 0 0 3px rgba(14, 165, 164, 0.3);
}

/* ========================================================================
   Base Styles
   ======================================================================== */

.mce-calculator {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: calc(16px * var(--mce-font-scale));
    line-height: 1.6;
    color: var(--mce-text);
    background: var(--mce-bg);
    border-radius: var(--mce-radius);
    padding: calc(var(--mce-gap) * 2);
    max-width: 100%;
    position: relative;
    overflow: hidden;
    transition: height 0.4s ease-in-out;
    min-height: 420px;
}

.mce-loading-skeleton {
    position: absolute;
    inset: 0;
    padding: calc(var(--mce-gap) * 2);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: calc(var(--mce-gap) * 1.25);
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 50%, #f8fafc 100%);
    z-index: 3;
}

.mce-skeleton-line,
.mce-skeleton-card {
    display: block;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.5) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: mce-skeleton-shimmer 1.2s infinite;
    border-radius: 999px;
    height: 14px;
}

.mce-skeleton-title {
    width: 60%;
    height: 18px;
}

.mce-skeleton-subtitle {
    width: 40%;
}

.mce-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: calc(var(--mce-gap) * 0.75);
}

.mce-skeleton-card {
    height: 72px;
    border-radius: 16px;
}

@keyframes mce-skeleton-shimmer {
    from {
        background-position: -200px 0;
    }
    to {
        background-position: 200px 0;
    }
}

.mce-is-ready .mce-loading-skeleton {
    display: none;
}

.mce-results {
    min-height: 220px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mce-results--visible {
    opacity: 1;
    pointer-events: auto;
}

.mce-results-placeholder {
    text-align: center;
    color: var(--mce-muted);
    margin-bottom: calc(var(--mce-gap) * 1.5);
    font-size: calc(14px * var(--mce-font-scale));
}

.mce-results--visible .mce-results-placeholder {
    display: none;
}

.mce-calculator * {
    box-sizing: border-box;
}

/* ========================================================================
   Layout Variants
   ======================================================================== */

/* Compact: Single-row controls for hero sections */
.mce-calculator.mce-layout-compact {
    padding: var(--mce-gap);
}

.mce-calculator.mce-layout-compact .mce-field-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: calc(var(--mce-gap) / 2);
}

/* Standard: Two-column on desktop, stacked on mobile */
.mce-calculator.mce-layout-standard {
    max-width: 700px;
}

/* Tall: Multi-section layout for standalone pages */
.mce-calculator.mce-layout-tall {
    max-width: 800px;
}

/* ========================================================================
   Typography
   ======================================================================== */

.mce-title {
    font-size: calc(24px * var(--mce-font-scale));
    font-weight: 700;
    margin: 0 0 calc(var(--mce-gap) / 2);
    color: var(--mce-primary);
}

.mce-subtitle {
    font-size: calc(14px * var(--mce-font-scale));
    color: var(--mce-muted);
    margin: 0 0 calc(var(--mce-gap) * 1.5);
}

.mce-calculator h3 {
    font-size: calc(18px * var(--mce-font-scale));
    font-weight: 600;
    margin: 0 0 var(--mce-gap);
    color: var(--mce-text);
}

/* ========================================================================
   Form Elements
   ======================================================================== */

.mce-form {
    display: flex;
    flex-direction: column;
    gap: calc(var(--mce-gap) * 1.5);
}

.mce-section {
    background: var(--mce-panel);
    padding: calc(var(--mce-gap) * 1.5);
    border-radius: var(--mce-radius);
}

.mce-field {
    display: flex;
    flex-direction: column;
    gap: calc(var(--mce-gap) / 2);
}

.mce-field label {
    font-size: calc(14px * var(--mce-font-scale));
    font-weight: 500;
    color: var(--mce-text);
}

.mce-field-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--mce-gap);
}

.mce-input,
.mce-select {
    width: 100%;
    padding: 10px 12px;
    font-size: calc(15px * var(--mce-font-scale));
    line-height: 1.5;
    color: var(--mce-text);
    background: var(--mce-bg);
    border: 2px solid var(--mce-border);
    border-radius: calc(var(--mce-radius) / 2);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.mce-input:focus,
.mce-select:focus {
    outline: none;
    border-color: var(--mce-primary);
    box-shadow: var(--mce-focus-ring);
}

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

textarea.mce-input {
    resize: vertical;
    min-height: 80px;
}

/* Checkboxes */
.mce-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--mce-gap);
}

.mce-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: calc(14px * var(--mce-font-scale));
    cursor: pointer;
    user-select: none;
}

.mce-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--mce-primary);
}

.mce-checkbox:focus-within {
    outline: 2px solid var(--mce-primary);
    outline-offset: 2px;
}

/* More Options */
.mce-more-options {
    margin-top: var(--mce-gap);
}

.mce-more-options summary {
    font-size: calc(14px * var(--mce-font-scale));
    color: var(--mce-primary);
    cursor: pointer;
    padding: 8px 0;
    user-select: none;
}

.mce-more-options summary:focus {
    outline: 2px solid var(--mce-primary);
    outline-offset: 2px;
}

.mce-more-options[open] summary {
    margin-bottom: var(--mce-gap);
}

/* ========================================================================
   Buttons
   ======================================================================== */

.mce-btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: calc(15px * var(--mce-font-scale));
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: calc(var(--mce-radius) / 2);
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s, opacity 0.2s;
    min-height: 44px; /* WCAG touch target */
    min-width: 44px;
}

.mce-btn:focus {
    outline: none;
    box-shadow: var(--mce-focus-ring);
}

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

.mce-btn:active {
    transform: translateY(0);
}

.mce-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.mce-btn-primary {
    background: var(--mce-primary);
    color: var(--mce-primaryText);
}

.mce-btn-secondary {
    background: var(--mce-panel);
    color: var(--mce-text);
    border: 2px solid var(--mce-border);
}

.mce-btn-accent {
    background: var(--mce-accent);
    color: #ffffff;
}

.mce-link {
    background: transparent;
    color: var(--mce-primary);
    border: none;
    padding: 4px 8px;
    font-size: calc(14px * var(--mce-font-scale));
    text-decoration: underline;
    cursor: pointer;
}

.mce-link:hover {
    text-decoration: none;
}

/* ========================================================================
   Actions & CTAs
   ======================================================================== */

.mce-actions {
    display: flex;
    justify-content: center;
    gap: var(--mce-gap);
}

.mce-ctas {
    display: none;
    flex-wrap: wrap;
    gap: var(--mce-gap);
    justify-content: center;
    margin-top: calc(var(--mce-gap) * 1.5);
}

.mce-calculator.mce-showing-results .mce-ctas {
    display: flex !important;
}

@media (max-width: 600px) {
    .mce-ctas .mce-btn {
        flex: 1 1 calc(50% - var(--mce-gap) / 2);
        min-width: 0;
    }
}

/* ========================================================================
   Content Wrapper (for smooth transitions)
   ======================================================================== */

.mce-calculator-wrapper {
    position: relative;
}

.mce-form-wrapper {
    transition: opacity 0.3s ease-in-out;
}

.mce-calculator.mce-showing-results .mce-form-wrapper {
    display: none;
}

/* ========================================================================
   Results & Breakdown
   ======================================================================== */

.mce-results {
    background: var(--mce-panel);
    padding: calc(var(--mce-gap) * 1.5);
    border-radius: var(--mce-radius);
    margin-top: calc(var(--mce-gap) * 1.5);
    display: none;
}

.mce-calculator.mce-showing-results .mce-results {
    display: block !important;
}

.mce-breakdown-table {
    margin: var(--mce-gap) 0;
}

.mce-breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--mce-border);
}

.mce-breakdown-row:last-child {
    border-bottom: none;
}

.mce-breakdown-label {
    font-size: calc(14px * var(--mce-font-scale));
    color: var(--mce-text);
}

.mce-breakdown-value {
    font-size: calc(14px * var(--mce-font-scale));
    font-weight: 600;
    color: var(--mce-text);
}

.mce-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--mce-gap) * 1.5);
    background: var(--mce-success);
    color: #ffffff;
    border-radius: var(--mce-radius);
    margin: var(--mce-gap) 0;
}

.mce-total-label {
    font-size: calc(18px * var(--mce-font-scale));
    font-weight: 600;
}

.mce-total-value {
    font-size: calc(28px * var(--mce-font-scale));
    font-weight: 700;
}

.mce-disclaimer {
    font-size: calc(12px * var(--mce-font-scale));
    color: var(--mce-muted);
    margin: var(--mce-gap) 0 0;
    line-height: 1.5;
}

/* ========================================================================
   Forms (Message/Booking)
   ======================================================================== */

.mce-message-form,
.mce-booking-form {
    background: var(--mce-panel);
    padding: calc(var(--mce-gap) * 1.5);
    border-radius: var(--mce-radius);
    margin-top: calc(var(--mce-gap) * 1.5);
    display: none;
}

.mce-calculator.mce-showing-message-form .mce-message-form {
    display: block !important;
}

.mce-calculator.mce-showing-booking-form .mce-booking-form {
    display: block !important;
}

/* ========================================================================
   Messages
   ======================================================================== */

.mce-success-message,
.mce-error-message {
    padding: calc(var(--mce-gap) * 1.5);
    border-radius: var(--mce-radius);
    margin: var(--mce-gap) 0;
    font-size: calc(14px * var(--mce-font-scale));
    font-weight: 500;
}

.mce-success-message {
    background: #d1fae5;
    color: #065f46;
    border: 2px solid var(--mce-success);
}

.mce-error-message {
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid var(--mce-danger);
}

/* ========================================================================
   Modal
   ======================================================================== */

.mce-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}

.mce-modal-content {
    background: var(--mce-bg);
    border-radius: var(--mce-radius);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    padding: calc(var(--mce-gap) * 2);
}

.mce-modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: transparent;
    border: none;
    font-size: 28px;
    color: var(--mce-muted);
    cursor: pointer;
    padding: 5px 10px;
    line-height: 1;
}

.mce-modal-close:hover {
    color: var(--mce-text);
}

.mce-modal-close:focus {
    outline: 2px solid var(--mce-primary);
    outline-offset: 2px;
}

.mce-modal-body {
    margin-top: var(--mce-gap);
    font-size: calc(14px * var(--mce-font-scale));
    line-height: 1.7;
}

/* ========================================================================
   Loading State
   ======================================================================== */

.mce-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--mce-radius);
    z-index: 100;
}

.mce-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--mce-border);
    border-top-color: var(--mce-primary);
    border-radius: 50%;
    animation: mce-spin 0.8s linear infinite;
}

@keyframes mce-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================================================
   Responsive Adjustments
   ======================================================================== */

@media (max-width: 600px) {
    .mce-calculator {
        padding: var(--mce-gap);
    }

    .mce-title {
        font-size: calc(20px * var(--mce-font-scale));
    }

    .mce-field-row {
        grid-template-columns: 1fr;
    }

    .mce-total {
        flex-direction: column;
        gap: calc(var(--mce-gap) / 2);
        text-align: center;
    }
}

/* ========================================================================
   Accessibility
   ======================================================================== */

/* Skip to main content link (for screen readers) */
.mce-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Ensure keyboard focus is always visible */
*:focus-visible {
    outline: 2px solid var(--mce-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .mce-calculator {
        border: 2px solid var(--mce-text);
    }

    .mce-btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}