/**
 * EcoFire Checkout Interceptor - Frontend Styles
 * Based on Design System Tokens
 */

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
    /* Accent Colors */
    --ecofire-accent-primary: #E0722B;
    --ecofire-accent-hover: #C96626;
    --ecofire-accent-active: #B85C22;
    --ecofire-accent-soft: #FFF0E6;
    --ecofire-accent-on-accent: #FFFFFF;

    /* Neutral Colors */
    --ecofire-neutral-white: #FFFFFF;
    --ecofire-neutral-off-white: #FCFBFC;
    --ecofire-neutral-bg: #F3F4F5;
    --ecofire-neutral-surface: #FFFFFF;
    --ecofire-neutral-surface-muted: #FCFBFC;
    --ecofire-neutral-border: #D8D8DC;
    --ecofire-neutral-divider: #E6E7EA;
    --ecofire-neutral-text-muted: #6F7687;
    --ecofire-neutral-text-subtle: #9E9FA9;
    --ecofire-neutral-icon-muted: #B0B7CC;

    /* Ink Colors */
    --ecofire-ink-900: #0A1B3A;
    --ecofire-ink-800: #1A2947;
    --ecofire-ink-700: #38455F;
    --ecofire-ink-600: #575D70;
    --ecofire-ink-on-dark: #FFFFFF;

    /* State Colors */
    --ecofire-state-focus-ring: #F17B2E;
    --ecofire-state-disabled-bg: #F3F4F5;
    --ecofire-state-disabled-text: #9E9FA9;

    /* Typography */
    --ecofire-font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --ecofire-font-weight-regular: 400;
    --ecofire-font-weight-medium: 500;
    --ecofire-font-weight-semibold: 600;
    --ecofire-font-weight-bold: 700;

    --ecofire-font-size-xs: 12px;
    --ecofire-font-size-sm: 14px;
    --ecofire-font-size-md: 16px;
    --ecofire-font-size-lg: 18px;
    --ecofire-font-size-xl: 24px;
    --ecofire-font-size-2xl: 32px;
    --ecofire-font-size-3xl: 40px;

    --ecofire-line-height-tight: 1.1;
    --ecofire-line-height-snug: 1.25;
    --ecofire-line-height-normal: 1.5;

    /* Spacing */
    --ecofire-spacing-0: 0px;
    --ecofire-spacing-1: 4px;
    --ecofire-spacing-2: 8px;
    --ecofire-spacing-3: 12px;
    --ecofire-spacing-4: 16px;
    --ecofire-spacing-5: 20px;
    --ecofire-spacing-6: 24px;
    --ecofire-spacing-8: 32px;
    --ecofire-spacing-10: 40px;
    --ecofire-spacing-12: 48px;
    --ecofire-spacing-16: 64px;

    /* Radius */
    --ecofire-radius-sm: 8px;
    --ecofire-radius-md: 12px;
    --ecofire-radius-lg: 16px;
    --ecofire-radius-xl: 24px;
    --ecofire-radius-pill: 999px;

    /* Shadows */
    --ecofire-shadow-card: 0 10px 30px rgba(10, 27, 58, 0.08);
    --ecofire-shadow-floating: 0 18px 50px rgba(10, 27, 58, 0.12);
    --ecofire-shadow-inset: inset 0 0 0 1px rgba(216, 216, 220, 1);

    /* Transitions */
    --ecofire-transition-fast: 150ms ease;
    --ecofire-transition-normal: 250ms ease;
}

/* ============================================
   Modal Overlay
   ============================================ */
.ecofire-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 27, 58, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--ecofire-spacing-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--ecofire-transition-normal), visibility var(--ecofire-transition-normal);
}

.ecofire-modal-overlay.ecofire-modal-active {
    display: flex;
    opacity: 1;
    visibility: visible;
}

.ecofire-modal-overlay.ecofire-modal-active {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Modal Container
   ============================================ */
.ecofire-modal {
    background-color: var(--ecofire-neutral-surface);
    border-radius: var(--ecofire-radius-lg);
    box-shadow: var(--ecofire-shadow-floating);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--ecofire-transition-normal), opacity var(--ecofire-transition-normal), visibility var(--ecofire-transition-normal);
}

.ecofire-modal-overlay.ecofire-modal-active .ecofire-modal {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Modal Header
   ============================================ */
.ecofire-modal-header {
    padding: var(--ecofire-spacing-8) var(--ecofire-spacing-8) var(--ecofire-spacing-4);
    border-bottom: 1px solid var(--ecofire-neutral-divider);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ecofire-modal-title {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-2xl);
    font-weight: var(--ecofire-font-weight-bold);
    color: var(--ecofire-ink-900);
    line-height: var(--ecofire-line-height-tight);
    margin: 0;
}

.ecofire-modal-close {
    background: var(--ecofire-neutral-bg);
    border: none;
    border-radius: var(--ecofire-radius-md);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--ecofire-ink-700);
    transition: background-color var(--ecofire-transition-fast), color var(--ecofire-transition-fast);
    flex-shrink: 0;
}

.ecofire-modal-close:hover {
    background-color: var(--ecofire-neutral-border);
    color: var(--ecofire-ink-900);
}

.ecofire-modal-close svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Modal Body
   ============================================ */
.ecofire-modal-body {
    padding: var(--ecofire-spacing-8);
}

/* ============================================
   Question View
   ============================================ */
.ecofire-question-view {
    text-align: center;
}

.ecofire-question-text {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-lg);
    font-weight: var(--ecofire-font-weight-medium);
    color: var(--ecofire-ink-800);
    line-height: var(--ecofire-line-height-normal);
    margin: 0 0 var(--ecofire-spacing-8);
}

.ecofire-question-actions {
    display: flex;
    flex-direction: column;
    gap: var(--ecofire-spacing-4);
    justify-content: center;
    align-items: center;
}

@media (min-width: 480px) {
    .ecofire-question-actions {
        flex-direction: row;
    }
}

/* ============================================
   Form View
   ============================================ */
.ecofire-form-view {
    display: none;
}

.ecofire-form-view.ecofire-form-active {
    display: block;
}

.ecofire-form-description {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-md);
    color: var(--ecofire-neutral-text-muted);
    line-height: var(--ecofire-line-height-normal);
    margin: 0 0 var(--ecofire-spacing-6);
}

/* ============================================
   Cart Summary
   ============================================ */
.ecofire-cart-summary {
    background-color: var(--ecofire-neutral-bg);
    border-radius: var(--ecofire-radius-md);
    padding: var(--ecofire-spacing-5);
    margin-bottom: var(--ecofire-spacing-6);
}

.ecofire-cart-summary-title {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-sm);
    font-weight: var(--ecofire-font-weight-semibold);
    color: var(--ecofire-neutral-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin: 0 0 var(--ecofire-spacing-4);
}

.ecofire-cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--ecofire-spacing-3);
}

.ecofire-cart-item {
    display: flex;
    align-items: center;
    gap: var(--ecofire-spacing-3);
    padding-bottom: var(--ecofire-spacing-3);
    border-bottom: 1px solid var(--ecofire-neutral-divider);
}

.ecofire-cart-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.ecofire-cart-item-image {
    width: 48px;
    height: 48px;
    border-radius: var(--ecofire-radius-sm);
    object-fit: cover;
    flex-shrink: 0;
    background-color: var(--ecofire-neutral-border);
}

.ecofire-cart-item-details {
    flex: 1;
    min-width: 0;
}

.ecofire-cart-item-name {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-sm);
    font-weight: var(--ecofire-font-weight-medium);
    color: var(--ecofire-ink-800);
    line-height: var(--ecofire-line-height-snug);
    margin: 0 0 var(--ecofire-spacing-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ecofire-cart-item-meta {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-xs);
    color: var(--ecofire-neutral-text-muted);
    line-height: var(--ecofire-line-height-normal);
}

.ecofire-cart-item-price {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-sm);
    font-weight: var(--ecofire-font-weight-semibold);
    color: var(--ecofire-ink-700);
    white-space: nowrap;
}

.ecofire-cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--ecofire-spacing-4);
    padding-top: var(--ecofire-spacing-4);
    border-top: 1px solid var(--ecofire-neutral-divider);
}

.ecofire-cart-total-label {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-md);
    font-weight: var(--ecofire-font-weight-semibold);
    color: var(--ecofire-ink-800);
}

.ecofire-cart-total-value {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-lg);
    font-weight: var(--ecofire-font-weight-bold);
    color: var(--ecofire-accent-primary);
}

/* ============================================
   Form Fields
   ============================================ */
.ecofire-form {
    display: flex;
    flex-direction: column;
    gap: var(--ecofire-spacing-5);
}

.ecofire-form-row {
    display: flex;
    flex-direction: column;
    gap: var(--ecofire-spacing-5);
    margin-bottom: var(--ecofire-spacing-5);
}

@media (min-width: 480px) {
    .ecofire-form-row.ecofire-form-row-2 {
        flex-direction: row;
        gap: var(--ecofire-spacing-5);
    }

    .ecofire-form-row.ecofire-form-row-2 .ecofire-form-group {
        flex: 1;
        min-width: 0; /* Prevent flex items from overflowing */
    }

    .ecofire-form-row.ecofire-form-row-2.ecofire-form-row-single .ecofire-form-group {
        flex: 1 1 100%;
    }
}

.ecofire-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--ecofire-spacing-2);
    width: 100%;
}

.ecofire-form-label {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-sm);
    font-weight: var(--ecofire-font-weight-medium);
    color: var(--ecofire-ink-800);
    line-height: var(--ecofire-line-height-normal);
}

.ecofire-form-label .required {
    color: var(--ecofire-accent-primary);
}

.ecofire-form-input,
.ecofire-form-textarea {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-md);
    color: var(--ecofire-ink-800);
    background-color: var(--ecofire-neutral-surface);
    border: 1px solid var(--ecofire-neutral-border);
    border-radius: var(--ecofire-radius-md);
    padding: var(--ecofire-spacing-3) var(--ecofire-spacing-4);
    line-height: var(--ecofire-line-height-normal);
    transition: border-color var(--ecofire-transition-fast), box-shadow var(--ecofire-transition-fast);
    width: 100%;
    box-sizing: border-box; /* Ensure padding doesn't affect width */
}

.ecofire-form-input:focus,
.ecofire-form-textarea:focus {
    outline: none;
    border-color: var(--ecofire-accent-primary);
    box-shadow: 0 0 0 3px rgba(224, 114, 43, 0.1);
}

.ecofire-form-input::placeholder,
.ecofire-form-textarea::placeholder {
    color: var(--ecofire-neutral-text-subtle);
}

.ecofire-form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* ============================================
   Buttons
   ============================================ */
.ecofire-btn {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-md);
    font-weight: var(--ecofire-font-weight-semibold);
    line-height: var(--ecofire-line-height-normal);
    border: none;
    border-radius: var(--ecofire-radius-pill);
    padding: var(--ecofire-spacing-3) var(--ecofire-spacing-6);
    cursor: pointer;
    transition: background-color var(--ecofire-transition-fast), color var(--ecofire-transition-fast), transform var(--ecofire-transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ecofire-spacing-2);
    text-decoration: none;
    min-height: 44px;
}

.ecofire-btn:active {
    transform: scale(0.98);
}

.ecofire-btn-primary {
    background-color: var(--ecofire-accent-primary);
    color: var(--ecofire-accent-on-accent);
}

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

.ecofire-btn-secondary {
    background-color: var(--ecofire-ink-900);
    color: var(--ecofire-ink-on-dark);
}

.ecofire-btn-secondary:hover {
    background-color: var(--ecofire-ink-800);
}

.ecofire-btn-ghost {
    background-color: transparent;
    color: var(--ecofire-ink-800);
}

.ecofire-btn-ghost:hover {
    background-color: var(--ecofire-neutral-bg);
}

.ecofire-btn-full {
    width: 100%;
}

.ecofire-request-quote-btn {
    width: 100%;
    margin-top: var(--ecofire-spacing-3);
}

.ecofire-btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.ecofire-btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid currentColor;
    border-radius: 50%;
    border-top-color: transparent;
    transform: translate(-50%, -50%);
    animation: ecofire-spin 0.8s linear infinite;
}

.ecofire-btn-primary.ecofire-btn-loading::after {
    border-color: var(--ecofire-accent-on-accent);
    border-top-color: transparent;
}

.ecofire-btn-secondary.ecofire-btn-loading::after {
    border-color: var(--ecofire-ink-on-dark);
    border-top-color: transparent;
}

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

/* ============================================
   Success Message
   ============================================ */
.ecofire-success-message {
    text-align: center;
    padding: var(--ecofire-spacing-8) 0;
    display: none;
}

.ecofire-success-message.ecofire-success-active {
    display: block;
}

.ecofire-success-icon {
    width: 64px;
    height: 64px;
    background-color: var(--ecofire-accent-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--ecofire-spacing-6);
}

.ecofire-success-icon svg {
    width: 32px;
    height: 32px;
    color: var(--ecofire-accent-primary);
}

.ecofire-success-title {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-xl);
    font-weight: var(--ecofire-font-weight-bold);
    color: var(--ecofire-ink-900);
    line-height: var(--ecofire-line-height-tight);
    margin: 0 0 var(--ecofire-spacing-3);
}

.ecofire-success-text {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-md);
    color: var(--ecofire-neutral-text-muted);
    line-height: var(--ecofire-line-height-normal);
    margin: 0;
}

/* ============================================
   Error Message
   ============================================ */
.ecofire-error-message {
    background-color: #FEF2F2;
    border: 1px solid #FECACA;
    border-radius: var(--ecofire-radius-md);
    padding: var(--ecofire-spacing-4);
    margin-bottom: var(--ecofire-spacing-5);
    display: none;
}

.ecofire-error-message.ecofire-error-active {
    display: block;
}

.ecofire-error-text {
    font-family: var(--ecofire-font-family);
    font-size: var(--ecofire-font-size-sm);
    color: #991B1B;
    line-height: var(--ecofire-line-height-normal);
    margin: 0;
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 640px) {
    .ecofire-modal {
        max-height: 95vh;
        margin: var(--ecofire-spacing-2);
    }

    .ecofire-modal-header,
    .ecofire-modal-body {
        padding: var(--ecofire-spacing-6);
    }

    .ecofire-modal-title {
        font-size: var(--ecofire-font-size-xl);
    }

    .ecofire-question-text {
        font-size: var(--ecofire-font-size-md);
    }
}

/* ============================================
   Accessibility
   ============================================ */
.ecofire-modal-overlay[aria-hidden="true"] {
    display: none;
}

.ecofire-btn:focus-visible,
.ecofire-form-input:focus-visible,
.ecofire-form-textarea:focus-visible {
    outline: 2px solid var(--ecofire-state-focus-ring);
    outline-offset: 2px;
}

/* Skip to modal content for keyboard users */
.ecofire-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;
}