/* ============================================
   MotoMynt Design System
   Mint Green & Charcoal Theme
   Mobile-First Responsive Design
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors - Primary (Mint) */
    --color-primary: #14B8A6;
    --color-primary-light: #2DD4BF;
    --color-primary-dark: #0F766E;
    --color-primary-50: #F0FDFA;
    --color-primary-100: #CCFBF1;
    
    /* Colors - Secondary (Charcoal) */
    --color-secondary: #374151;
    --color-secondary-dark: #1F2937;
    --color-secondary-light: #4B5563;
    --color-secondary-50: #F9FAFB;
    
    /* Colors - Background */
    --color-bg: #F0FDFA;
    --color-bg-alt: #FFFFFF;
    --color-bg-charcoal: #374151;
    
    /* Colors - Text */
    --color-text: #374151;
    --color-text-light: #6B7280;
    --color-text-lighter: #9CA3AF;
    --color-text-white: #FFFFFF;
    
    /* Colors - Status */
    --color-success: #14B8A6;
    --color-success-light: #2DD4BF;
    --color-warning: #F59E0B;
    --color-warning-light: #FCD34D;
    --color-error: #EF4444;
    --color-error-light: #FCA5A5;
    --color-info: #3B82F6;
    --color-info-light: #93C5FD;
    
    /* Colors - Borders */
    --color-border: #E5E7EB;
    --color-border-dark: #D1D5DB;
    --color-border-mint: #2DD4BF;
    
    /* Spacing */
    --spacing-unit: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(55, 65, 81, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(55, 65, 81, 0.1), 0 2px 4px -1px rgba(55, 65, 81, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(55, 65, 81, 0.1), 0 4px 6px -2px rgba(55, 65, 81, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(55, 65, 81, 0.1), 0 10px 10px -5px rgba(55, 65, 81, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 640px;
}

.container-lg {
    max-width: 1400px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    min-height: 44px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

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

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
}

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

.btn-primary:active:not(:disabled) {
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-text-white);
    border-color: var(--color-secondary);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-secondary-dark);
    border-color: var(--color-secondary-dark);
}

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

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-primary-50);
}

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

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-primary-50);
    color: var(--color-primary-dark);
}

.btn-danger {
    background-color: var(--color-error);
    color: var(--color-text-white);
    border-color: var(--color-error);
}

.btn-danger:hover:not(:disabled) {
    background-color: #DC2626;
    border-color: #DC2626;
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    min-height: 36px;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    min-height: 52px;
    font-size: var(--font-size-lg);
}

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

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-lighter);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: 24px;
}

.form-check-input {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form-check-label {
    font-size: var(--font-size-base);
    color: var(--color-text);
    cursor: pointer;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-fast);
}

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

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-primary-50);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* Card Variants */
.card-mint {
    border-color: var(--color-primary-light);
    border-width: 2px;
}

.card-clickable {
    cursor: pointer;
}

.card-clickable:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-white);
    padding: var(--spacing-lg) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: var(--z-sticky);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.header-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-white);
    margin: 0;
}

.header-subtitle {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    margin-top: var(--spacing-xs);
}

/* Navigation */
.nav {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--color-text-white);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-text-white);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.15);
}

/* Mobile Menu */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: var(--z-modal);
}

.hamburger-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-text-white);
    margin: 5px 0;
    transition: all var(--transition-base);
    border-radius: 2px;
}

.hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--color-bg-charcoal);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: var(--z-fixed);
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(31, 41, 55, 0.5);
    z-index: var(--z-modal-backdrop);
}

.mobile-menu-overlay.active {
    display: block;
}

/* ============================================
   Alerts & Messages
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid transparent;
    font-size: var(--font-size-base);
}

.alert-success {
    background-color: #D1FAE5;
    border-color: var(--color-success-light);
    color: #065F46;
}

.alert-error {
    background-color: #FEE2E2;
    border-color: var(--color-error-light);
    color: #991B1B;
}

.alert-warning {
    background-color: #FEF3C7;
    border-color: var(--color-warning-light);
    color: #92400E;
}

.alert-info {
    background-color: #DBEAFE;
    border-color: var(--color-info-light);
    color: #1E40AF;
}

/* ============================================
   Badges & Pills
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    line-height: 1;
}

.badge-primary {
    background-color: var(--color-primary-100);
    color: var(--color-primary-dark);
}

.badge-success {
    background-color: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.badge-error {
    background-color: #FEE2E2;
    color: #991B1B;
}

.badge-secondary {
    background-color: var(--color-secondary-50);
    color: var(--color-secondary);
}

/* ============================================
   Stats & Metrics
   ============================================ */
.stat-card {
    background-color: var(--color-bg-alt);
    border: 2px solid var(--color-primary-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: var(--line-height-tight);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Lists
   ============================================ */
.list-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.list-item {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
}

.list-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-sm);
}

.list-item-clickable {
    cursor: pointer;
}

.list-item-clickable:hover {
    transform: translateX(4px);
}

/* ============================================
   Grid System
   ============================================ */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

/* ============================================
   Flex Utilities
   ============================================ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.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; }
.flex-wrap { flex-wrap: wrap; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ============================================
   Spacing Utilities
   ============================================ */
.m-0 { margin: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* ============================================
   Text Utilities
   ============================================ */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-light { color: var(--color-text-light); }
.text-white { color: var(--color-text-white); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* ============================================
   Display Utilities
   ============================================ */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* ============================================
   Mobile-First Responsive Breakpoints
   ============================================ */
@media (max-width: 768px) {
    .hamburger-btn {
        display: block;
    }
    
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .header {
        padding: var(--spacing-md) var(--spacing-md);
    }
    
    .header-title {
        font-size: var(--font-size-xl);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
}

@media (min-width: 769px) {
    .grid-cols-2-md { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-3-md { grid-template-columns: repeat(3, 1fr); }
    .grid-cols-4-md { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .header,
    .nav,
    .hamburger-btn,
    .mobile-menu,
    .btn {
        display: none;
    }
    
    body {
        background-color: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* ============================================
   Accessibility
   ============================================ */
.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;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}