/**
 * TWORK FREELANCE MARKETPLACE
 * Core Design System - style.css
 * Fiverr-inspired, clean professional design
 */

/* =============================================
   GOOGLE FONTS
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* =============================================
   CSS CUSTOM PROPERTIES
   ============================================= */
:root {
    /* Brand Colors */
    --color-primary: #1DBF73;
    --color-primary-dark: #19a463;
    --color-primary-light: #e8f8f0;
    --color-primary-hover: #17a864;
    
    /* Neutrals */
    --color-text-dark: #222325;
    --color-text: #404145;
    --color-text-light: #62646a;
    --color-text-lighter: #95979d;
    --color-text-white: #ffffff;
    
    /* Backgrounds */
    --color-bg-white: #ffffff;
    --color-bg-light: #f5f5f5;
    --color-bg-dark: #0d0d0d;
    --color-bg-nav: #404145;
    --color-bg-nav-hover: #303033;
    
    /* Borders */
    --color-border: #e4e5e7;
    --color-border-light: #efeff0;
    --color-border-dark: #c5c6c9;
    
    /* Accent */
    --color-star: #ffb33e;
    --color-error: #e74c3c;
    --color-success: #1dbf73;
    --color-warning: #f39c12;
    --color-info: #3498db;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.14);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.9375rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.25rem;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    /* Container */
    --container-max: 1400px;
    --container-narrow: 1100px;
    --nav-height: 64px;
    --category-bar-height: 46px;
}

/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg-white);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    font-size: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* =============================================
   CONTAINER
   ============================================= */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.container--narrow {
    max-width: var(--container-narrow);
}

/* =============================================
   TOP NAVIGATION
   ============================================= */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    height: var(--nav-height);
    transition: box-shadow var(--transition-base);
}

.top-nav.scrolled {
    box-shadow: var(--shadow-md);
}

.top-nav__inner {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 20px;
}

/* Logo */
.top-nav__logo {
    display: flex;
    align-items: center;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-text-dark);
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

.top-nav__logo span {
    color: var(--color-primary);
}

/* Search Bar */
.top-nav__search {
    flex: 1;
    max-width: 580px;
    position: relative;
}

.top-nav__search-form {
    display: flex;
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.top-nav__search-form:focus-within {
    border-color: var(--color-text-dark);
    box-shadow: 0 0 0 1px var(--color-text-dark);
}

.top-nav__search-input {
    flex: 1;
    padding: 10px 16px;
    border: none;
    outline: none;
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    background: transparent;
}

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

.top-nav__search-btn {
    padding: 10px 18px;
    background: var(--color-text-dark);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.top-nav__search-btn:hover {
    background: var(--color-primary-dark);
}

/* Nav Links */
.top-nav__links {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.top-nav__link {
    padding: 8px 12px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.top-nav__link:hover {
    color: var(--color-primary);
}

.top-nav__link--join {
    background: var(--color-primary);
    color: white;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.top-nav__link--join:hover {
    background: var(--color-primary-dark);
    color: white;
}

.top-nav__link--signin {
    color: var(--color-text-dark);
    font-weight: 600;
}

/* User Menu (logged in) */
.top-nav__user {
    position: relative;
}

.top-nav__user-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px;
    border-radius: var(--radius-full);
    cursor: pointer;
}

.top-nav__user-avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.top-nav__user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    min-width: 220px;
    padding: 8px 0;
    display: none;
    z-index: 1001;
}

.top-nav__user-dropdown.active {
    display: block;
}

.top-nav__user-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    transition: background var(--transition-fast);
}

.top-nav__user-dropdown a:hover {
    background: var(--color-bg-light);
    color: var(--color-text-dark);
}

.top-nav__user-dropdown .dropdown-divider {
    height: 1px;
    background: var(--color-border-light);
    margin: 4px 0;
}

/* Notification badge */
.nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 9px;
}

/* Mobile Menu */
.top-nav__mobile-toggle {
    display: none;
    padding: 8px;
    color: var(--color-text-dark);
}

/* =============================================
   CATEGORY NAVIGATION BAR
   ============================================= */
.category-bar {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    height: var(--category-bar-height);
    overflow: hidden;
}

.category-bar__inner {
    display: flex;
    align-items: center;
    height: 100%;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    gap: 0;
}

.category-bar__inner::-webkit-scrollbar {
    display: none;
}

.category-bar__link {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 14px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.category-bar__link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.category-bar__link.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* Category Dropdown */
.category-bar__item {
    position: relative;
    height: 100%;
}

.category-bar__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: 8px 0;
    display: none;
    z-index: 999;
}

.category-bar__item:hover .category-bar__dropdown {
    display: block;
}

.category-bar__dropdown a {
    display: block;
    padding: 8px 20px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.category-bar__dropdown a:hover {
    background: var(--color-bg-light);
    color: var(--color-primary);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    line-height: 1.4;
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

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

.btn--dark:hover {
    background: #111;
    border-color: #111;
    color: white;
}

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

.btn--outline:hover {
    background: var(--color-primary);
    color: white;
}

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

.btn--outline-dark:hover {
    background: var(--color-text-dark);
    color: white;
}

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

.btn--white:hover {
    background: var(--color-bg-light);
    border-color: var(--color-bg-light);
    color: var(--color-text-dark);
}

.btn--lg {
    padding: 14px 36px;
    font-size: var(--font-size-md);
}

.btn--sm {
    padding: 6px 16px;
    font-size: var(--font-size-sm);
}

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

.btn--icon {
    padding: 8px;
    border-radius: var(--radius-full);
}

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

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-dark);
}

.form-input {
    width: 100%;
    padding: 11px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    background: var(--color-bg-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-text-dark);
    box-shadow: 0 0 0 1px var(--color-text-dark);
}

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

.form-input--error {
    border-color: var(--color-error);
}

.form-error {
    margin-top: 4px;
    font-size: var(--font-size-xs);
    color: var(--color-error);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2362646a' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* =============================================
   FLASH MESSAGES
   ============================================= */
.flash {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.flash--success {
    background: var(--color-primary-light);
    color: #0d7a47;
    border: 1px solid #b8e6d3;
}

.flash--error {
    background: #fdf0ef;
    color: #c0392b;
    border: 1px solid #f5c6cb;
}

.flash--warning {
    background: #fff9e6;
    color: #a17a0b;
    border: 1px solid #ffeaa7;
}

.flash--info {
    background: #edf5fd;
    color: #2471a3;
    border: 1px solid #aed6f1;
}

/* =============================================
   GIG CARDS
   ============================================= */
.gig-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.gig-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

.gig-card__image {
    position: relative;
    width: 100%;
    padding-top: 60%;
    overflow: hidden;
    background: var(--color-bg-light);
}

.gig-card__image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gig-card:hover .gig-card__image img {
    transform: scale(1.03);
}

.gig-card__favorite {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 2;
}

.gig-card__favorite:hover {
    background: white;
    transform: scale(1.1);
}

.gig-card__favorite.active svg {
    fill: #e74c3c;
    stroke: #e74c3c;
}

.gig-card__body {
    padding: 14px;
}

.gig-card__seller {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.gig-card__seller-avatar {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.gig-card__seller-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-dark);
}

.gig-card__seller-level {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-lighter);
    margin-left: auto;
}

.gig-card__title {
    font-size: var(--font-size-base);
    font-weight: 400;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.gig-card__title a {
    color: var(--color-text);
}

.gig-card__title a:hover {
    color: var(--color-primary);
}

.gig-card__rating {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 10px;
}

.gig-card__rating .stars {
    display: flex;
    gap: 1px;
}

.gig-card__rating-score {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-text-dark);
}

.gig-card__rating-count {
    font-size: var(--font-size-xs);
    color: var(--color-text-lighter);
}

.gig-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 10px;
    border-top: 1px solid var(--color-border-light);
}

.gig-card__price-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-lighter);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gig-card__price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-dark);
}

/* =============================================
   GIG GRID
   ============================================= */
.gig-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* =============================================
   STAR ICONS
   ============================================= */
.stars {
    display: inline-flex;
    align-items: center;
    gap: 1px;
}

.star-icon {
    width: 15px;
    height: 15px;
}

.star-icon.filled {
    color: var(--color-star);
}

.star-icon.half {
    color: var(--color-star);
}

.star-icon.empty {
    color: var(--color-border-dark);
}

/* =============================================
   SELLER BADGES
   ============================================= */
.seller-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 3px;
    letter-spacing: 0.3px;
}

.seller-badge--new {
    background: var(--color-bg-light);
    color: var(--color-text-light);
}

.seller-badge--level_1 {
    background: #e8f5f0;
    color: #0d7a47;
}

.seller-badge--level_2 {
    background: #e8f0fd;
    color: #2471a3;
}

.seller-badge--top_rated {
    background: #fef5e7;
    color: #c0841d;
}

/* =============================================
   SECTION HEADINGS
   ============================================= */
.section-heading {
    margin-bottom: var(--space-2xl);
}

.section-heading__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: var(--space-sm);
}

.section-heading__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    font-weight: 400;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
    background: var(--color-bg-dark);
    color: var(--color-text-lighter);
    padding: var(--space-4xl) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid #333;
}

.footer-col__title {
    font-size: var(--font-size-md);
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: var(--space-lg);
}

.footer-col__list a {
    display: block;
    padding: 4px 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-lighter);
    transition: color var(--transition-fast);
}

.footer-col__list a:hover {
    color: var(--color-text-white);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xl) 0;
}

.footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-text-lighter);
}

.footer-logo span {
    color: var(--color-primary);
}

.footer-copy {
    font-size: var(--font-size-xs);
    color: #666;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-lighter);
    border-radius: var(--radius-full);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-text-white);
}

/* =============================================
   PAGINATION
   ============================================= */
.pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: var(--space-2xl);
}

.pagination__link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.pagination__link:hover {
    background: var(--color-bg-light);
    border-color: var(--color-border-dark);
    color: var(--color-text-dark);
}

.pagination__link.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.pagination__link.disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* =============================================
   LOADING SPINNER
   ============================================= */
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

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

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1200px) {
    .gig-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .gig-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .top-nav__search {
        display: none;
    }
    
    .top-nav__links {
        display: none;
    }
    
    .top-nav__mobile-toggle {
        display: flex;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }
}

@media (max-width: 600px) {
    .gig-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    :root {
        --font-size-5xl: 1.875rem;
        --font-size-4xl: 1.5rem;
    }
}

/* =============================================
   MOBILE NAV OVERLAY
   ============================================= */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--color-bg-white);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    transition: right var(--transition-base);
    padding: 20px;
    overflow-y: auto;
}

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

.mobile-nav__close {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.mobile-nav__search {
    margin-bottom: 20px;
}

.mobile-nav__search .top-nav__search-form {
    width: 100%;
}

.mobile-nav__links a {
    display: block;
    padding: 12px 0;
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
}

.mobile-nav__links a:hover {
    color: var(--color-primary);
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1999;
    display: none;
}

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

/* =============================================
   UTILITY CLASSES
   ============================================= */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-dark { color: var(--color-text-dark); }
.text-light { color: var(--color-text-light); }
.text-bold { font-weight: 700; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mt-3 { margin-top: var(--space-2xl); }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }
.mb-3 { margin-bottom: var(--space-2xl); }
.pt-section { padding-top: var(--space-4xl); }
.pb-section { padding-bottom: var(--space-4xl); }
.bg-light { background: var(--color-bg-light); }
.d-none { display: none; }
.d-flex { display: flex; }
.items-center { align-items: center; }
.gap-1 { gap: var(--space-md); }
.gap-2 { gap: var(--space-xl); }