/**
 * MKisan Design System
 * Core CSS variables, utilities, and base styles
 * These variables are overwritten by ThemeService from admin settings
 */

/* =================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ================================================================= */

:root {
    /* Primary Colors */
    --mkisan-primary: #16a34a;
    --mkisan-primary-dark: #15803d;
    --mkisan-primary-light: #22c55e;
    --mkisan-primary-bg: #f0fdf4;

    /* Secondary Colors */
    --mkisan-secondary: #2563eb;
    --mkisan-secondary-light: #dbeafe;

    /* Deal Type Colors */
    --mkisan-buy-color: #3b82f6;
    --mkisan-sell-color: #16a34a;

    /* Status Colors */
    --mkisan-danger: #dc2626;
    --mkisan-warning: #f59e0b;
    --mkisan-success: #22c55e;
    --mkisan-info: #0ea5e9;

    /* Text Colors */
    --mkisan-text: #1f2937;
    --mkisan-text-light: #6b7280;
    --mkisan-text-muted: #9ca3af;

    /* Background Colors */
    --mkisan-bg: #f3f4f6;
    --mkisan-bg-white: #ffffff;
    --mkisan-border: #e5e7eb;

    /* Typography */
    --mkisan-font: 'Mukta', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mkisan-heading-font: var(--mkisan-font);
    --mkisan-font-size-xs: 12px;
    --mkisan-font-size-sm: 14px;
    --mkisan-font-size-base: 16px;
    --mkisan-font-size-lg: 18px;
    --mkisan-font-size-xl: 20px;
    --mkisan-font-size-2xl: 24px;
    --mkisan-font-size-3xl: 30px;
    --mkisan-font-size-4xl: 36px;

    /* Spacing */
    --mkisan-spacing-xs: 4px;
    --mkisan-spacing-sm: 8px;
    --mkisan-spacing-md: 16px;
    --mkisan-spacing-lg: 24px;
    --mkisan-spacing-xl: 32px;
    --mkisan-spacing-2xl: 48px;

    /* Border Radius */
    --mkisan-radius-sm: 6px;
    --mkisan-radius: 12px;
    --mkisan-radius-lg: 16px;
    --mkisan-radius-xl: 24px;
    --mkisan-radius-full: 9999px;

    /* Shadows */
    --mkisan-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --mkisan-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --mkisan-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --mkisan-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --mkisan-shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --mkisan-transition-fast: 0.15s ease;
    --mkisan-transition: 0.2s ease;
    --mkisan-transition-slow: 0.3s ease;

    /* Z-Index Scale */
    --mkisan-z-dropdown: 100;
    --mkisan-z-sticky: 500;
    --mkisan-z-fixed: 1000;
    --mkisan-z-modal-backdrop: 1500;
    --mkisan-z-modal: 2000;
    --mkisan-z-tooltip: 2500;

    /* Container Widths */
    --mkisan-container-sm: 640px;
    --mkisan-container-md: 768px;
    --mkisan-container-lg: 1024px;
    --mkisan-container-xl: 1280px;
    --mkisan-container-2xl: 1400px;

    /* Legacy Variable Aliases (Backward Compatibility) */
    --primary: var(--mkisan-primary);
    --primary-dark: var(--mkisan-primary-dark);
    --primary-light: var(--mkisan-primary-light);
    --primary-bg: var(--mkisan-primary-bg);
    --secondary: var(--mkisan-secondary);
    --text: var(--mkisan-text);
    --text-light: var(--mkisan-text-light);
    --text-muted: var(--mkisan-text-muted);
    --bg: var(--mkisan-bg);
    --card: var(--mkisan-bg-white);
    --border: var(--mkisan-border);
    --radius: var(--mkisan-radius);
    --shadow: var(--mkisan-shadow);
    --shadow-lg: var(--mkisan-shadow-lg);
}

/* =================================================================
   BASE RESET & DEFAULTS
   ================================================================= */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--mkisan-font);
    font-size: var(--mkisan-font-size-base);
    line-height: 1.6;
    color: var(--mkisan-text);
    background-color: var(--mkisan-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--mkisan-heading-font);
    font-weight: 700;
    line-height: 1.3;
    color: var(--mkisan-text);
}

h1 {
    font-size: var(--mkisan-font-size-4xl);
}

h2 {
    font-size: var(--mkisan-font-size-3xl);
}

h3 {
    font-size: var(--mkisan-font-size-2xl);
}

h4 {
    font-size: var(--mkisan-font-size-xl);
}

h5 {
    font-size: var(--mkisan-font-size-lg);
}

h6 {
    font-size: var(--mkisan-font-size-base);
}

/* Links */
a {
    color: var(--mkisan-primary);
    text-decoration: none;
    transition: color var(--mkisan-transition);
}

a:hover {
    color: var(--mkisan-primary-dark);
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Lists */
ul,
ol {
    list-style: none;
}

/* Form Elements */
button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

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

/* Container */
.mkisan-container {
    width: 100%;
    max-width: var(--mkisan-container-2xl);
    margin: 0 auto;
    padding: 0 var(--mkisan-spacing-md);
}

/* Flex Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

.gap-sm {
    gap: var(--mkisan-spacing-sm);
}

.gap-md {
    gap: var(--mkisan-spacing-md);
}

.gap-lg {
    gap: var(--mkisan-spacing-lg);
}

/* Grid Utilities */
.grid {
    display: grid;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Text Utilities */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-sm {
    font-size: var(--mkisan-font-size-sm);
}

.text-lg {
    font-size: var(--mkisan-font-size-lg);
}

.text-xl {
    font-size: var(--mkisan-font-size-xl);
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

.text-muted {
    color: var(--mkisan-text-muted);
}

.text-light {
    color: var(--mkisan-text-light);
}

.text-primary {
    color: var(--mkisan-primary);
}

.text-danger {
    color: var(--mkisan-danger);
}

.text-success {
    color: var(--mkisan-success);
}

/* Spacing Utilities */
.mt-sm {
    margin-top: var(--mkisan-spacing-sm);
}

.mt-md {
    margin-top: var(--mkisan-spacing-md);
}

.mt-lg {
    margin-top: var(--mkisan-spacing-lg);
}

.mb-sm {
    margin-bottom: var(--mkisan-spacing-sm);
}

.mb-md {
    margin-bottom: var(--mkisan-spacing-md);
}

.mb-lg {
    margin-bottom: var(--mkisan-spacing-lg);
}

.p-sm {
    padding: var(--mkisan-spacing-sm);
}

.p-md {
    padding: var(--mkisan-spacing-md);
}

.p-lg {
    padding: var(--mkisan-spacing-lg);
}

/* Border Radius */
.rounded {
    border-radius: var(--mkisan-radius);
}

.rounded-sm {
    border-radius: var(--mkisan-radius-sm);
}

.rounded-lg {
    border-radius: var(--mkisan-radius-lg);
}

.rounded-full {
    border-radius: var(--mkisan-radius-full);
}

/* Shadows */
.shadow {
    box-shadow: var(--mkisan-shadow);
}

.shadow-sm {
    box-shadow: var(--mkisan-shadow-sm);
}

.shadow-lg {
    box-shadow: var(--mkisan-shadow-lg);
}

/* Visibility */
.hidden {
    display: none !important;
}

.visible {
    visibility: visible;
}

.invisible {
    visibility: hidden;
}

/* Overflow */
.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.overflow-x-auto {
    overflow-x: auto;
}

/* Width/Height */
.w-full {
    width: 100%;
}

.h-full {
    height: 100%;
}

.min-h-screen {
    min-height: 100vh;
}

/* =================================================================
   RESPONSIVE BREAKPOINTS
   Standardized: sm(640px), md(768px), lg(1024px), xl(1280px)
   ================================================================= */

/* Hide on mobile, show on tablet+ */
@media (max-width: 767px) {
    .hide-mobile {
        display: none !important;
    }
}

/* Hide on tablet+, show on mobile */
@media (min-width: 768px) {
    .hide-desktop {
        display: none !important;
    }
}

/* Responsive Grid */
@media (max-width: 1023px) {
    .grid-cols-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 767px) {

    .grid-cols-4,
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 479px) {

    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
}

/* Responsive Typography */
@media (max-width: 767px) {
    h1 {
        font-size: var(--mkisan-font-size-2xl);
    }

    h2 {
        font-size: var(--mkisan-font-size-xl);
    }

    h3 {
        font-size: var(--mkisan-font-size-lg);
    }
}

/* =================================================================
   ACCESSIBILITY
   ================================================================= */

/* Focus States */
:focus-visible {
    outline: 2px solid var(--mkisan-primary);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    background: var(--mkisan-primary);
    color: white;
    border-radius: var(--mkisan-radius);
    z-index: var(--mkisan-z-tooltip);
    transition: top var(--mkisan-transition);
}

.skip-link:focus {
    top: 10px;
}

/* Screen Reader Only */
.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;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Visually Hidden (alias for sr-only) */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =================================================================
   DARK MODE
   Activated via [data-theme="dark"] on html/body or via media query
   ================================================================= */

/* Manual Dark Mode Toggle */
[data-theme="dark"] {
    /* Primary Colors (slightly lighter for dark backgrounds) */
    --mkisan-primary: #22c55e;
    --mkisan-primary-dark: #16a34a;
    --mkisan-primary-light: #4ade80;
    --mkisan-primary-bg: #052e16;

    /* Secondary Colors */
    --mkisan-secondary: #60a5fa;
    --mkisan-secondary-light: #1e3a5f;

    /* Text Colors (inverted) */
    --mkisan-text: #f3f4f6;
    --mkisan-text-light: #d1d5db;
    --mkisan-text-muted: #9ca3af;

    /* Background Colors (dark) */
    --mkisan-bg: #111827;
    --mkisan-bg-white: #1f2937;
    --mkisan-border: #374151;

    /* Shadows (more subtle on dark) */
    --mkisan-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --mkisan-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    --mkisan-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --mkisan-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
    --mkisan-shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.7);

    /* Legacy Aliases (update for dark mode) */
    --primary: var(--mkisan-primary);
    --text: var(--mkisan-text);
    --text-light: var(--mkisan-text-light);
    --bg: var(--mkisan-bg);
    --card: var(--mkisan-bg-white);
    --border: var(--mkisan-border);
}

/* Auto Dark Mode (respects system preference) */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        /* Primary Colors */
        --mkisan-primary: #22c55e;
        --mkisan-primary-dark: #16a34a;
        --mkisan-primary-light: #4ade80;
        --mkisan-primary-bg: #052e16;

        /* Secondary Colors */
        --mkisan-secondary: #60a5fa;
        --mkisan-secondary-light: #1e3a5f;

        /* Text Colors */
        --mkisan-text: #f3f4f6;
        --mkisan-text-light: #d1d5db;
        --mkisan-text-muted: #9ca3af;

        /* Background Colors */
        --mkisan-bg: #111827;
        --mkisan-bg-white: #1f2937;
        --mkisan-border: #374151;

        /* Shadows */
        --mkisan-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
        --mkisan-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
        --mkisan-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
        --mkisan-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);

        /* Legacy Aliases */
        --primary: var(--mkisan-primary);
        --text: var(--mkisan-text);
        --text-light: var(--mkisan-text-light);
        --bg: var(--mkisan-bg);
        --card: var(--mkisan-bg-white);
        --border: var(--mkisan-border);
    }
}