/**
 * ECOPARK BOOKING DESIGN SYSTEM (Tokens, Typography, Spacing, Primitives, A11y)
 * Version: 0.2.0
 * Architecture: Canonical Kadence inheritance, provider-agnostic, hospitality-first
 */

/* ==========================================================================
   1. GLOBAL TOKENS (BE-DS-01, BE-DS-02, BE-DS-03)
   Canonical Source: Derived directly from Kadence Global Theme Palette
   ========================================================================== */
:root {
    /* Brand & Primary Palette (Ecopark Green derived from Kadence) */
    --eco-color-primary: var(--global-palette1, #00683c);
    --eco-color-primary-dark: var(--global-palette2, #004d2e);
    --eco-color-ink: var(--global-palette3, #1e293b);
    --eco-color-ink-subtle: var(--global-palette4, #475569);
    --eco-color-ink-muted: var(--global-palette5, #64748b);
    --eco-color-border: var(--global-palette6, #e2e8f0);
    --eco-color-border-subtle: var(--global-palette7, #f1f5f9);
    --eco-color-surface: var(--global-palette8, #ffffff);
    --eco-color-bg: var(--global-palette9, #f8fafc);

    /* Derived States & Surfaces */
    --eco-color-primary-light: #00874e;
    --eco-color-primary-surface: #ecfdf5;
    --eco-color-primary-border: #a7f3d0;
    --eco-color-border-strong: #cbd5e1;

    /* Accent Palette (Water / Sky / Lake) */
    --eco-color-accent: #0284c7;
    --eco-color-accent-dark: #0369a1;
    --eco-color-accent-light: #38bdf8;
    --eco-color-accent-surface: #f0f9ff;

    /* Gold / Luxury / Pricing Accent */
    --eco-color-gold: #c68a00;
    --eco-color-gold-dark: #9a6700;
    --eco-color-gold-light: #f5b014;
    --eco-color-gold-surface: #fffbeb;

    /* Feedback & Status */
    --eco-color-success: #16a34a;
    --eco-color-success-surface: #f0fdf4;
    --eco-color-success-border: #bbf7d0;

    --eco-color-warning: #d97706;
    --eco-color-warning-surface: #fffbeb;
    --eco-color-warning-border: #fde68a;

    --eco-color-danger: #dc2626;
    --eco-color-danger-surface: #fef2f2;
    --eco-color-danger-border: #fecaca;

    --eco-color-info: #2563eb;
    --eco-color-info-surface: #eff6ff;
    --eco-color-info-border: #bfdbfe;

    /* Typography Scale (BE-DS-02) - Inherits from Kadence Font Family */
    --eco-font-family: var(--global-body-font-family, var(--global-primary-font, Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif));
    --eco-font-family-display: var(--global-heading-font-family, var(--eco-font-family));

    --eco-font-xs: 0.75rem;    /* 12px */
    --eco-font-sm: 0.8125rem;  /* 13px */
    --eco-font-base: 0.9375rem;/* 15px */
    --eco-font-md: 1rem;       /* 16px */
    --eco-font-lg: 1.125rem;   /* 18px */
    --eco-font-xl: 1.25rem;    /* 20px */
    --eco-font-2xl: 1.5rem;    /* 24px */
    --eco-font-3xl: 1.875rem;  /* 30px */
    --eco-font-4xl: 2.375rem;  /* 38px */
    --eco-font-5xl: 3rem;      /* 48px */

    --eco-weight-normal: 400;
    --eco-weight-medium: 500;
    --eco-weight-semibold: 600;
    --eco-weight-bold: 700;
    --eco-weight-extrabold: 800;

    --eco-lh-tight: 1.2;
    --eco-lh-snug: 1.35;
    --eco-lh-normal: 1.5;
    --eco-lh-relaxed: 1.65;

    /* Spacing Scale (BE-DS-03) */
    --eco-space-1: 4px;
    --eco-space-2: 8px;
    --eco-space-3: 12px;
    --eco-space-4: 16px;
    --eco-space-5: 20px;
    --eco-space-6: 24px;
    --eco-space-8: 32px;
    --eco-space-10: 40px;
    --eco-space-12: 48px;
    --eco-space-16: 64px;
    --eco-space-20: 80px;

    /* Radii */
    --eco-radius-sm: 6px;
    --eco-radius-md: 10px;
    --eco-radius-lg: 14px;
    --eco-radius-xl: 20px;
    --eco-radius-2xl: 28px;
    --eco-radius-full: 9999px;

    /* Shadows */
    --eco-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --eco-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --eco-shadow-md: 0 6px 18px rgba(0, 0, 0, 0.07);
    --eco-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.09);
    --eco-shadow-xl: 0 20px 48px rgba(15, 23, 42, 0.12);

    /* Transitions */
    --eco-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --eco-transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --eco-transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Containers */
    --eco-container-max: 1280px;
    --eco-container-narrow: 960px;
}

/* ==========================================================================
   2. CONTAINERS & LAYOUT (BE-DS-03)
   ========================================================================== */
.eco-container {
    width: 100%;
    max-width: var(--eco-container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--eco-space-4);
    padding-right: var(--eco-space-4);
    box-sizing: border-box;
}

.eco-container-narrow {
    width: 100%;
    max-width: var(--eco-container-narrow);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--eco-space-4);
    padding-right: var(--eco-space-4);
    box-sizing: border-box;
}

.eco-container-fluid {
    width: 100%;
    padding-left: var(--eco-space-4);
    padding-right: var(--eco-space-4);
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .eco-container, .eco-container-narrow, .eco-container-fluid {
        padding-left: var(--eco-space-6);
        padding-right: var(--eco-space-6);
    }
}

@media (min-width: 1024px) {
    .eco-container, .eco-container-narrow, .eco-container-fluid {
        padding-left: var(--eco-space-8);
        padding-right: var(--eco-space-8);
    }
}

/* ==========================================================================
   3. COMPONENT PRIMITIVES (BE-DS-04)
   ========================================================================== */

/* Buttons */
.eco-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--eco-space-2);
    font-family: var(--eco-font-family);
    font-size: var(--eco-font-base);
    font-weight: var(--eco-weight-semibold);
    line-height: 1.2;
    text-decoration: none;
    border-radius: var(--eco-radius-md);
    padding: 10px 20px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background var(--eco-transition-fast), border-color var(--eco-transition-fast), transform var(--eco-transition-fast), box-shadow var(--eco-transition-fast);
    white-space: nowrap;
    min-height: 44px; /* A11y touch target */
    box-sizing: border-box;
}

.eco-btn-primary {
    background: var(--eco-color-primary);
    color: #ffffff;
    border-color: var(--eco-color-primary);
    box-shadow: 0 2px 6px rgba(0, 104, 60, 0.2);
}

.eco-btn-primary:hover {
    background: var(--eco-color-primary-dark);
    border-color: var(--eco-color-primary-dark);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 104, 60, 0.3);
}

.eco-btn-secondary {
    background: var(--eco-color-accent);
    color: #ffffff;
    border-color: var(--eco-color-accent);
}

.eco-btn-secondary:hover {
    background: var(--eco-color-accent-dark);
    border-color: var(--eco-color-accent-dark);
    color: #ffffff;
    transform: translateY(-1px);
}

.eco-btn-outline {
    background: transparent;
    color: var(--eco-color-primary);
    border-color: var(--eco-color-primary);
}

.eco-btn-outline:hover {
    background: var(--eco-color-primary-surface);
    color: var(--eco-color-primary-dark);
}

.eco-btn-ghost {
    background: transparent;
    color: var(--eco-color-ink);
    border-color: transparent;
}

.eco-btn-ghost:hover {
    background: var(--eco-color-surface-hover);
    color: var(--eco-color-primary);
}

.eco-btn-sm {
    padding: 6px 14px;
    font-size: var(--eco-font-sm);
    min-height: 38px;
    border-radius: var(--eco-radius-sm);
}

.eco-btn-lg {
    padding: 14px 28px;
    font-size: var(--eco-font-md);
    min-height: 50px;
    border-radius: var(--eco-radius-lg);
}

.eco-btn-block {
    width: 100%;
    display: flex;
}

/* Forms */
.eco-form-group {
    margin-bottom: var(--eco-space-4);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.eco-form-label {
    font-size: var(--eco-font-sm);
    font-weight: var(--eco-weight-semibold);
    color: var(--eco-color-ink);
}

.eco-form-input, .eco-form-select, .eco-form-textarea {
    width: 100%;
    box-sizing: border-box;
    font-family: var(--eco-font-family);
    font-size: var(--eco-font-base);
    color: var(--eco-color-ink);
    background: var(--eco-color-surface);
    border: 1px solid var(--eco-color-border-strong);
    border-radius: var(--eco-radius-md);
    padding: 10px 14px;
    min-height: 44px; /* A11y touch target */
    transition: border-color var(--eco-transition-fast), box-shadow var(--eco-transition-fast);
}

.eco-form-input:focus, .eco-form-select:focus, .eco-form-textarea:focus {
    border-color: var(--eco-color-primary);
    box-shadow: 0 0 0 3px rgba(0, 104, 60, 0.15);
    outline: none;
}

.eco-form-input::placeholder, .eco-form-textarea::placeholder {
    color: var(--eco-color-ink-muted);
}

.eco-form-hint {
    font-size: var(--eco-font-xs);
    color: var(--eco-color-ink-muted);
}

.eco-form-error {
    font-size: var(--eco-font-xs);
    color: var(--eco-color-danger);
    font-weight: var(--eco-weight-medium);
}

/* Cards */
.eco-card {
    background: var(--eco-color-surface);
    border: 1px solid var(--eco-color-border);
    border-radius: var(--eco-radius-lg);
    box-shadow: var(--eco-shadow-sm);
    overflow: hidden;
    transition: transform var(--eco-transition-normal), box-shadow var(--eco-transition-normal), border-color var(--eco-transition-normal);
}

.eco-card-interactive:hover {
    transform: translateY(-3px);
    box-shadow: var(--eco-shadow-md);
    border-color: var(--eco-color-border-strong);
}

.eco-card-body {
    padding: var(--eco-space-5);
}

.eco-card-header {
    padding: var(--eco-space-4) var(--eco-space-5);
    border-bottom: 1px solid var(--eco-color-border);
}

.eco-card-footer {
    padding: var(--eco-space-4) var(--eco-space-5);
    border-top: 1px solid var(--eco-color-border);
    background: var(--eco-color-bg);
}

/* Badges & Status Pills */
.eco-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: var(--eco-font-xs);
    font-weight: var(--eco-weight-bold);
    letter-spacing: 0.02em;
    padding: 3px 9px;
    border-radius: var(--eco-radius-full);
    line-height: 1.3;
}

.eco-badge-primary {
    background: var(--eco-color-primary-surface);
    color: var(--eco-color-primary);
    border: 1px solid var(--eco-color-primary-border);
}

.eco-badge-success {
    background: var(--eco-color-success-surface);
    color: var(--eco-color-success);
    border: 1px solid var(--eco-color-success-border);
}

.eco-badge-warning {
    background: var(--eco-color-warning-surface);
    color: var(--eco-color-warning);
    border: 1px solid var(--eco-color-warning-border);
}

.eco-badge-danger {
    background: var(--eco-color-danger-surface);
    color: var(--eco-color-danger);
    border: 1px solid var(--eco-color-danger-border);
}

.eco-badge-info {
    background: var(--eco-color-info-surface);
    color: var(--eco-color-info);
    border: 1px solid var(--eco-color-info-border);
}

.eco-badge-gold {
    background: var(--eco-color-gold-surface);
    color: var(--eco-color-gold-dark);
    border: 1px solid var(--eco-color-gold-light);
}

/* Alerts */
.eco-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--eco-space-3);
    padding: var(--eco-space-4);
    border-radius: var(--eco-radius-md);
    font-size: var(--eco-font-sm);
    line-height: 1.5;
    margin-bottom: var(--eco-space-4);
}

.eco-alert-info {
    background: var(--eco-color-info-surface);
    border: 1px solid var(--eco-color-info-border);
    color: #1e40af;
}

.eco-alert-success {
    background: var(--eco-color-success-surface);
    border: 1px solid var(--eco-color-success-border);
    color: #166534;
}

.eco-alert-warning {
    background: var(--eco-color-warning-surface);
    border: 1px solid var(--eco-color-warning-border);
    color: #92400e;
}

.eco-alert-danger {
    background: var(--eco-color-danger-surface);
    border: 1px solid var(--eco-color-danger-border);
    color: #991b1b;
}

/* Tabs */
.eco-tabs-nav {
    display: flex;
    gap: var(--eco-space-2);
    border-bottom: 2px solid var(--eco-color-border);
    margin-bottom: var(--eco-space-5);
    overflow-x: auto;
}

.eco-tab-btn {
    background: transparent;
    border: none;
    padding: 10px 18px;
    font-family: var(--eco-font-family);
    font-size: var(--eco-font-base);
    font-weight: var(--eco-weight-semibold);
    color: var(--eco-color-ink-muted);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all var(--eco-transition-fast);
    white-space: nowrap;
    min-height: 44px;
}

.eco-tab-btn:hover {
    color: var(--eco-color-primary);
}

.eco-tab-btn.is-active {
    color: var(--eco-color-primary);
    border-bottom-color: var(--eco-color-primary);
}

/* Accordion */
.eco-accordion {
    border: 1px solid var(--eco-color-border);
    border-radius: var(--eco-radius-md);
    overflow: hidden;
    background: var(--eco-color-surface);
}

.eco-accordion-item {
    border-bottom: 1px solid var(--eco-color-border);
}

.eco-accordion-item:last-child {
    border-bottom: none;
}

.eco-accordion-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--eco-space-4) var(--eco-space-5);
    background: transparent;
    border: none;
    font-family: var(--eco-font-family);
    font-size: var(--eco-font-base);
    font-weight: var(--eco-weight-semibold);
    color: var(--eco-color-ink);
    text-align: left;
    cursor: pointer;
    min-height: 48px;
}

.eco-accordion-trigger:hover {
    background: var(--eco-color-surface-hover);
}

.eco-accordion-icon {
    transition: transform var(--eco-transition-normal);
    font-size: 14px;
    color: var(--eco-color-ink-muted);
}

.eco-accordion-trigger[aria-expanded="true"] .eco-accordion-icon {
    transform: rotate(180deg);
}

.eco-accordion-content {
    padding: 0 var(--eco-space-5) var(--eco-space-4) var(--eco-space-5);
    font-size: var(--eco-font-sm);
    color: var(--eco-color-ink-subtle);
    line-height: 1.6;
}

/* Modal / Bottom Sheet / Drawer */
.eco-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 9990;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--eco-space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--eco-transition-normal), visibility var(--eco-transition-normal);
}

.eco-modal-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.eco-modal-dialog {
    background: var(--eco-color-surface);
    border-radius: var(--eco-radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--eco-shadow-xl);
    transform: translateY(20px);
    transition: transform var(--eco-transition-smooth);
}

.eco-modal-backdrop.is-open .eco-modal-dialog {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .eco-modal-backdrop {
        align-items: flex-end;
        padding: 0;
    }

    .eco-bottom-sheet {
        border-radius: var(--eco-radius-2xl) var(--eco-radius-2xl) 0 0;
        max-height: 85vh;
        width: 100%;
        transform: translateY(100%);
    }

    .eco-modal-backdrop.is-open .eco-bottom-sheet {
        transform: translateY(0);
    }
}

/* Skeletons & Spinners */
.eco-skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: eco-skeleton-wave 1.5s infinite;
    border-radius: var(--eco-radius-sm);
}

@keyframes eco-skeleton-wave {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.eco-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--eco-color-border);
    border-top-color: var(--eco-color-primary);
    border-radius: 50%;
    animation: eco-spin 0.8s linear infinite;
    display: inline-block;
}

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

/* Empty State */
.eco-empty-state {
    text-align: center;
    padding: var(--eco-space-12) var(--eco-space-6);
    background: var(--eco-color-surface);
    border: 1px dashed var(--eco-color-border-strong);
    border-radius: var(--eco-radius-xl);
}

.eco-empty-icon {
    font-size: 48px;
    color: var(--eco-color-ink-muted);
    margin-bottom: var(--eco-space-3);
}

.eco-empty-title {
    font-size: var(--eco-font-xl);
    font-weight: var(--eco-weight-bold);
    color: var(--eco-color-ink);
    margin: 0 0 var(--eco-space-2) 0;
}

.eco-empty-desc {
    font-size: var(--eco-font-base);
    color: var(--eco-color-ink-muted);
    max-width: 460px;
    margin: 0 auto var(--eco-space-5) auto;
}

/* ==========================================================================
   4. ASPECT RATIOS & A11Y BASELINE (BE-DS-05)
   ========================================================================== */
.eco-ratio-16-9 { aspect-ratio: 16 / 9; object-fit: cover; }
.eco-ratio-4-3  { aspect-ratio: 4 / 3; object-fit: cover; }
.eco-ratio-1-1  { aspect-ratio: 1 / 1; object-fit: cover; }
.eco-ratio-3-2  { aspect-ratio: 3 / 2; object-fit: cover; }

/* Focus ring visible */
:focus-visible {
    outline: 2px solid var(--eco-color-primary) !important;
    outline-offset: 2px !important;
}

/* Disabled state */
.eco-btn:disabled, .eco-btn.is-disabled,
.eco-form-input:disabled, .eco-form-select:disabled {
    opacity: 0.55;
    cursor: not-allowed !important;
    pointer-events: none;
}

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