/**
 * CloudStay Design Tokens v1.1
 *
 * Single source of truth for all design variables.
 * Import this file first in any CSS that needs these tokens.
 *
 * @package Cloudstay
 * @since 1.2.0
 */

:root {
    /* ==========================================================================
       1. COLOR PALETTE
       ========================================================================== */

    /* Brand Colors */
    --cs-primary: #e35323;
    --cs-primary-hover: #c94a1f;
    --cs-secondary: #1f1f1f;
    --cs-accent: #f97316;

    /* Gray Scale (Tailwind-inspired) */
    --cs-gray-50: #f9fafb;
    --cs-gray-100: #f3f4f6;
    --cs-gray-200: #e5e7eb;
    --cs-gray-300: #d1d5db;
    --cs-gray-400: #9ca3af;
    --cs-gray-500: #6b7280;
    --cs-gray-600: #4b5563;
    --cs-gray-700: #374151;
    --cs-gray-800: #1f2937;
    --cs-gray-900: #111827;

    /* Semantic Colors */
    --cs-text-primary: var(--cs-gray-900);
    --cs-text-secondary: var(--cs-gray-600);
    --cs-text-muted: var(--cs-gray-500);
    --cs-text-light: var(--cs-gray-400);
    --cs-text-inverse: #ffffff;

    --cs-bg-primary: #ffffff;
    --cs-bg-secondary: var(--cs-gray-50);
    --cs-bg-tertiary: var(--cs-gray-100);
    --cs-bg-hover: var(--cs-gray-100);
    --cs-bg-active: var(--cs-gray-200);

    --cs-border-primary: var(--cs-gray-200);
    --cs-border-secondary: var(--cs-gray-300);
    --cs-border-light: var(--cs-gray-100);
    --cs-border-focus: var(--cs-gray-900);

    /* Status Colors */
    --cs-success: #16a34a;
    --cs-success-bg: #dcfce7;
    --cs-error: #dc2626;
    --cs-error-bg: #fef2f2;
    --cs-warning: #f59e0b;
    --cs-warning-bg: #fffbeb;
    --cs-info: #3b82f6;
    --cs-info-bg: #eff6ff;

    /* ==========================================================================
       2. TYPOGRAPHY
       ========================================================================== */

    /* Font Families */
    --cs-font-sans: var(--e-global-typography-text-font-family, inherit);
    --cs-font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Monaco, Consolas, monospace;

    /* Font Sizes */
    --cs-text-xs: 12px;
    --cs-text-sm: 14px;
    --cs-text-base: 16px;
    --cs-text-lg: 18px;
    --cs-text-xl: 20px;
    --cs-text-2xl: 24px;
    --cs-text-3xl: 32px;
    --cs-text-4xl: 40px;

    /* Font Weights */
    --cs-font-normal: 400;
    --cs-font-medium: 500;
    --cs-font-semibold: 600;
    --cs-font-bold: 700;

    /* Line Heights */
    --cs-leading-tight: 1.25;
    --cs-leading-normal: 1.5;
    --cs-leading-relaxed: 1.625;

    /* ==========================================================================
       3. SPACING (4px base unit)
       ========================================================================== */

    --cs-space-0: 0;
    --cs-space-1: 4px;
    --cs-space-2: 8px;
    --cs-space-3: 12px;
    --cs-space-4: 16px;
    --cs-space-5: 20px;
    --cs-space-6: 24px;
    --cs-space-8: 32px;
    --cs-space-10: 40px;
    --cs-space-12: 48px;
    --cs-space-16: 64px;
    --cs-space-20: 80px;

    /* ==========================================================================
       4. BORDER RADIUS
       ========================================================================== */

    --cs-radius-none: 0;
    --cs-radius-sm: 4px;
    --cs-radius-md: 8px;
    --cs-radius-lg: 12px;
    --cs-radius-xl: 16px;
    --cs-radius-2xl: 24px;
    --cs-radius-full: 9999px;

    /* ==========================================================================
       5. SHADOWS
       ========================================================================== */

    --cs-shadow-none: none;
    --cs-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --cs-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --cs-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --cs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --cs-shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.15);
    --cs-shadow-2xl: 0 24px 48px rgba(0, 0, 0, 0.18);

    /* Focus ring shadow */
    --cs-ring-focus: 0 0 0 2px var(--cs-bg-primary), 0 0 0 4px var(--cs-gray-900);

    /* ==========================================================================
       6. TRANSITIONS
       ========================================================================== */

    --cs-transition-fast: 0.1s ease;
    --cs-transition-base: 0.15s ease;
    --cs-transition-normal: 0.2s ease;
    --cs-transition-slow: 0.3s ease;

    /* Specific transitions */
    --cs-transition-colors: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
    --cs-transition-transform: transform 0.2s ease;
    --cs-transition-opacity: opacity 0.2s ease;
    --cs-transition-shadow: box-shadow 0.2s ease;
    --cs-transition-all: all 0.2s ease;

    /* ==========================================================================
       7. Z-INDEX SCALE
       ========================================================================== */

    --cs-z-base: 0;
    --cs-z-dropdown: 100;
    --cs-z-sticky: 200;
    --cs-z-fixed: 300;
    --cs-z-overlay: 400;
    --cs-z-modal: 500;
    --cs-z-popover: 600;
    --cs-z-tooltip: 700;
    --cs-z-toast: 800;
    --cs-z-max: 9999;

    /* ==========================================================================
       8. COMPONENT-SPECIFIC TOKENS
       ========================================================================== */

    /* Buttons */
    --cs-btn-height-sm: 32px;
    --cs-btn-height-md: 40px;
    --cs-btn-height-lg: 48px;
    --cs-btn-padding-sm: 8px 12px;
    --cs-btn-padding-md: 10px 16px;
    --cs-btn-padding-lg: 14px 24px;
    --cs-btn-font-size: var(--cs-text-sm);
    --cs-btn-font-weight: var(--cs-font-semibold);
    --cs-btn-radius: var(--cs-radius-md);

    /* Inputs */
    --cs-input-height: 48px;
    --cs-input-padding: 12px 16px;
    --cs-input-font-size: var(--cs-text-sm);
    --cs-input-radius: var(--cs-radius-md);
    --cs-input-border: 1px solid var(--cs-border-secondary);
    --cs-input-border-focus: 1px solid var(--cs-border-focus);

    /* Cards */
    --cs-card-radius: var(--cs-radius-lg);
    --cs-card-shadow: var(--cs-shadow-sm);
    --cs-card-shadow-hover: var(--cs-shadow-lg);
    --cs-card-padding: var(--cs-space-4);

    /* Modals */
    --cs-modal-radius: var(--cs-radius-xl);
    --cs-modal-shadow: var(--cs-shadow-xl);
    --cs-modal-header-padding: var(--cs-space-4) var(--cs-space-5);
    --cs-modal-body-padding: var(--cs-space-5);
    --cs-modal-footer-padding: var(--cs-space-4) var(--cs-space-5);

    /* Icons */
    --cs-icon-xs: 12px;
    --cs-icon-sm: 16px;
    --cs-icon-md: 20px;
    --cs-icon-lg: 24px;
    --cs-icon-xl: 32px;

    /* ==========================================================================
       9. BREAKPOINTS (for reference, use in media queries)
       ========================================================================== */

    /*
     * --cs-breakpoint-sm: 640px;
     * --cs-breakpoint-md: 768px;
     * --cs-breakpoint-lg: 1024px;
     * --cs-breakpoint-xl: 1280px;
     * --cs-breakpoint-2xl: 1536px;
     */
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

/* Text Colors */
.cs-text-primary { color: var(--cs-text-primary) !important; }
.cs-text-secondary { color: var(--cs-text-secondary) !important; }
.cs-text-muted { color: var(--cs-text-muted) !important; }
.cs-text-success { color: var(--cs-success) !important; }
.cs-text-error { color: var(--cs-error) !important; }
.cs-text-warning { color: var(--cs-warning) !important; }

/* Background Colors */
.cs-bg-primary { background-color: var(--cs-bg-primary) !important; }
.cs-bg-secondary { background-color: var(--cs-bg-secondary) !important; }
.cs-bg-success { background-color: var(--cs-success-bg) !important; }
.cs-bg-error { background-color: var(--cs-error-bg) !important; }

/* Font Sizes */
.cs-text-xs { font-size: var(--cs-text-xs) !important; }
.cs-text-sm { font-size: var(--cs-text-sm) !important; }
.cs-text-base { font-size: var(--cs-text-base) !important; }
.cs-text-lg { font-size: var(--cs-text-lg) !important; }
.cs-text-xl { font-size: var(--cs-text-xl) !important; }
.cs-text-2xl { font-size: var(--cs-text-2xl) !important; }

/* Font Weights */
.cs-font-normal { font-weight: var(--cs-font-normal) !important; }
.cs-font-medium { font-weight: var(--cs-font-medium) !important; }
.cs-font-semibold { font-weight: var(--cs-font-semibold) !important; }
.cs-font-bold { font-weight: var(--cs-font-bold) !important; }

/* Spacing (margin/padding) */
.cs-m-0 { margin: var(--cs-space-0) !important; }
.cs-m-1 { margin: var(--cs-space-1) !important; }
.cs-m-2 { margin: var(--cs-space-2) !important; }
.cs-m-3 { margin: var(--cs-space-3) !important; }
.cs-m-4 { margin: var(--cs-space-4) !important; }

.cs-p-0 { padding: var(--cs-space-0) !important; }
.cs-p-1 { padding: var(--cs-space-1) !important; }
.cs-p-2 { padding: var(--cs-space-2) !important; }
.cs-p-3 { padding: var(--cs-space-3) !important; }
.cs-p-4 { padding: var(--cs-space-4) !important; }

/* Gap */
.cs-gap-1 { gap: var(--cs-space-1) !important; }
.cs-gap-2 { gap: var(--cs-space-2) !important; }
.cs-gap-3 { gap: var(--cs-space-3) !important; }
.cs-gap-4 { gap: var(--cs-space-4) !important; }
.cs-gap-6 { gap: var(--cs-space-6) !important; }

/* Border Radius */
.cs-rounded-none { border-radius: var(--cs-radius-none) !important; }
.cs-rounded-sm { border-radius: var(--cs-radius-sm) !important; }
.cs-rounded-md { border-radius: var(--cs-radius-md) !important; }
.cs-rounded-lg { border-radius: var(--cs-radius-lg) !important; }
.cs-rounded-full { border-radius: var(--cs-radius-full) !important; }

/* Shadows */
.cs-shadow-none { box-shadow: var(--cs-shadow-none) !important; }
.cs-shadow-sm { box-shadow: var(--cs-shadow-sm) !important; }
.cs-shadow-md { box-shadow: var(--cs-shadow-md) !important; }
.cs-shadow-lg { box-shadow: var(--cs-shadow-lg) !important; }
.cs-shadow-xl { box-shadow: var(--cs-shadow-xl) !important; }

/* ==========================================================================
   COMPONENT BASE STYLES
   ========================================================================== */

/* Button Base */
.cs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--cs-space-2);
    height: var(--cs-btn-height-md);
    padding: var(--cs-btn-padding-md);
    font-family: inherit;
    font-size: var(--cs-btn-font-size);
    font-weight: var(--cs-btn-font-weight);
    line-height: 1;
    text-decoration: none;
    border-radius: var(--cs-btn-radius);
    cursor: pointer;
    transition: var(--cs-transition-colors), var(--cs-transition-shadow);
    -webkit-appearance: none;
    appearance: none;
}

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

.cs-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Button Variants */
.cs-btn--primary {
    color: var(--cs-text-inverse);
    background-color: var(--cs-gray-900);
    border: 1px solid var(--cs-gray-900);
}

.cs-btn--primary:hover:not(:disabled) {
    background-color: var(--cs-gray-800);
    border-color: var(--cs-gray-800);
}

.cs-btn--secondary {
    color: var(--cs-text-primary);
    background-color: transparent;
    border: 1px solid var(--cs-gray-900);
}

.cs-btn--secondary:hover:not(:disabled) {
    background-color: var(--cs-gray-900);
    color: var(--cs-text-inverse);
}

.cs-btn--ghost {
    color: var(--cs-text-primary);
    background-color: transparent;
    border: 1px solid transparent;
}

.cs-btn--ghost:hover:not(:disabled) {
    background-color: var(--cs-bg-hover);
}

/* Button Sizes */
.cs-btn--sm {
    height: var(--cs-btn-height-sm);
    padding: var(--cs-btn-padding-sm);
    font-size: var(--cs-text-xs);
}

.cs-btn--lg {
    height: var(--cs-btn-height-lg);
    padding: var(--cs-btn-padding-lg);
    font-size: var(--cs-text-base);
}

/* Input Base */
.cs-input {
    display: block;
    width: 100%;
    height: var(--cs-input-height);
    padding: var(--cs-input-padding);
    font-family: inherit;
    font-size: var(--cs-input-font-size);
    color: var(--cs-text-primary);
    background-color: var(--cs-bg-primary);
    border: var(--cs-input-border);
    border-radius: var(--cs-input-radius);
    outline: none;
    transition: var(--cs-transition-colors);
    -webkit-appearance: none;
    appearance: none;
}

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

.cs-input::placeholder {
    color: var(--cs-text-muted);
}

.cs-input:disabled {
    background-color: var(--cs-bg-secondary);
    cursor: not-allowed;
}

/* Card Base */
.cs-card {
    background-color: var(--cs-bg-primary);
    border-radius: var(--cs-card-radius);
    box-shadow: var(--cs-card-shadow);
    overflow: hidden;
    transition: var(--cs-transition-shadow), var(--cs-transition-transform);
}

.cs-card:hover {
    box-shadow: var(--cs-card-shadow-hover);
}

.cs-card--clickable:hover {
    transform: translateY(-2px);
}

/* Modal Base */
.cs-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--cs-space-4);
    z-index: var(--cs-z-modal);
}

.cs-modal__overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.cs-modal__content {
    position: relative;
    width: 100%;
    max-width: 500px;
    max-height: calc(100vh - var(--cs-space-8));
    background-color: var(--cs-bg-primary);
    border-radius: var(--cs-modal-radius);
    box-shadow: var(--cs-modal-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.cs-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--cs-modal-header-padding);
    border-bottom: 1px solid var(--cs-border-light);
}

.cs-modal__title {
    font-size: var(--cs-text-base);
    font-weight: var(--cs-font-semibold);
    color: var(--cs-text-primary);
    margin: 0;
}

.cs-modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    color: var(--cs-text-secondary);
    background-color: var(--cs-bg-secondary);
    border: none;
    border-radius: var(--cs-radius-full);
    cursor: pointer;
    transition: var(--cs-transition-colors);
}

.cs-modal__close:hover {
    background-color: var(--cs-bg-active);
    color: var(--cs-text-primary);
}

.cs-modal__body {
    flex: 1;
    padding: var(--cs-modal-body-padding);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.cs-modal__footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--cs-space-3);
    padding: var(--cs-modal-footer-padding);
    border-top: 1px solid var(--cs-border-light);
}

/* Badge/Tag Base */
.cs-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--cs-space-1);
    padding: var(--cs-space-1) var(--cs-space-2);
    font-size: var(--cs-text-xs);
    font-weight: var(--cs-font-medium);
    line-height: 1;
    border-radius: var(--cs-radius-sm);
}

.cs-badge--default {
    color: var(--cs-text-secondary);
    background-color: var(--cs-bg-tertiary);
}

.cs-badge--success {
    color: var(--cs-success);
    background-color: var(--cs-success-bg);
}

.cs-badge--error {
    color: var(--cs-error);
    background-color: var(--cs-error-bg);
}

.cs-badge--warning {
    color: var(--cs-warning);
    background-color: var(--cs-warning-bg);
}

/* Loading Spinner */
.cs-spinner {
    display: inline-block;
    width: var(--cs-icon-md);
    height: var(--cs-icon-md);
    border: 2px solid var(--cs-gray-200);
    border-top-color: var(--cs-gray-900);
    border-radius: var(--cs-radius-full);
    animation: cs-spin 0.8s linear infinite;
}

.cs-spinner--sm {
    width: var(--cs-icon-sm);
    height: var(--cs-icon-sm);
}

.cs-spinner--lg {
    width: var(--cs-icon-lg);
    height: var(--cs-icon-lg);
}

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

/* Divider */
.cs-divider {
    width: 100%;
    height: 1px;
    background-color: var(--cs-border-light);
    margin: var(--cs-space-4) 0;
}

/* Screen Reader Only */
.cs-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}