/* ==========================================================================
   IT of United States - Shared Stylesheet
   Version: 2.0.0
   ========================================================================== */

/* ==========================================================================
   DESIGN TOKENS
   ========================================================================== */
:root {
    /* Color Palette - Light Mode */
    --color-bg: #FFFFFF;
    --color-surface: #FFFFFF;
    --color-surface-elevated: #F7FAFC;
    --color-border: #E2E8F0;
    --color-border-strong: #CBD5E0;
    --color-text-primary: #1A202C;
    --color-text-secondary: #4A5568;
    --color-text-muted: #718096;
    --color-brand: #4A90D9;
    --color-brand-dark: #2563EB;
    --color-brand-light: #63B3ED;
    --color-success: #38A169;
    --color-error: #E53E3E;
    --color-warning: #D69E2E;
    --color-info: #3182CE;
    --color-green: #38A169;
    --color-red: #C53030;
    --color-purple: #805AD5;
    --color-orange: #DD6B20;
    
    /* Typography */
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Touch Target */
    --touch-target: 44px;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: #0D1117;
        --color-surface: #161B22;
        --color-surface-elevated: #21262D;
        --color-border: #30363D;
        --color-border-strong: #484F58;
        --color-text-primary: #F0F6FC;
        --color-text-secondary: #C9D1D9;
        --color-text-muted: #8B949E;
        --color-brand: #58A6FF;
        --color-brand-dark: #1F6FEB;
        --color-brand-light: #79C0FF;
        --color-success: #3FB950;
        --color-error: #F85149;
        --color-warning: #D29922;
        --color-green: #3FB950;
        --color-red: #F85149;
        --color-purple: #A371F7;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    }
}

[data-theme="dark"] {
    --color-bg: #0D1117;
    --color-surface: #161B22;
    --color-surface-elevated: #21262D;
    --color-border: #30363D;
    --color-border-strong: #484F58;
    --color-text-primary: #F0F6FC;
    --color-text-secondary: #C9D1D9;
    --color-text-muted: #8B949E;
    --color-brand: #58A6FF;
    --color-brand-dark: #1F6FEB;
    --color-brand-light: #79C0FF;
    --color-success: #3FB950;
    --color-error: #F85149;
    --color-warning: #D29922;
    --color-green: #3FB950;
    --color-red: #F85149;
    --color-purple: #A371F7;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-secondary);
    background-color: var(--color-bg);
    min-height: 100vh;
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

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

:focus:not(:focus-visible) {
    outline: none;
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.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;
}

.skip-link {
    position: absolute;
    top: -100px;
    left: var(--space-4);
    background: var(--color-brand);
    color: #fff;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    z-index: var(--z-toast);
    font-weight: var(--font-weight-semibold);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header__inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.header__logo {
    display: flex;
    align-items: center;
}

.header__logo-img {
    height: 40px;
    width: auto;
}

@media (min-width: 640px) {
    .header__logo-img {
        height: 50px;
    }
}

.header__right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

@media (min-width: 768px) {
    .header__right {
        gap: var(--space-4);
    }
}

/* Navigation */
.nav {
    display: none;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
        align-items: center;
        gap: var(--space-1);
    }
}

.nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    transition: background var(--transition-normal), color var(--transition-normal);
    min-height: var(--touch-target);
}

.nav__link:hover,
.nav__link.is-active {
    background: var(--color-border);
    color: var(--color-brand);
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: background var(--transition-normal), color var(--transition-normal);
}

.theme-toggle:hover {
    background: var(--color-border);
    color: var(--color-brand);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle__sun { display: none; }
.theme-toggle__moon { display: block; }

[data-theme="dark"] .theme-toggle__sun { display: block; }
[data-theme="dark"] .theme-toggle__moon { display: none; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle__sun { display: block; }
    :root:not([data-theme="light"]) .theme-toggle__moon { display: none; }
}

/* Phone Link */
.phone-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    transition: color var(--transition-normal);
    min-height: var(--touch-target);
}

.phone-link:hover {
    color: var(--color-brand);
}

.phone-link svg {
    color: var(--color-brand);
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.phone-link__number {
    display: none;
}

@media (min-width: 480px) {
    .phone-link__number {
        display: inline;
    }
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    min-width: var(--touch-target);
    min-height: var(--touch-target);
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: transform var(--transition-slow);
}

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

.mobile-overlay.is-active {
    display: block;
    opacity: 1;
}

.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 85%;
    max-width: 320px;
    height: 100%;
    height: 100dvh;
    background: var(--color-surface);
    padding: var(--space-5);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    z-index: var(--z-modal);
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-nav.is-active {
    transform: translateX(0);
}

.mobile-nav__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-4);
    margin-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.mobile-nav__close {
    width: var(--touch-target);
    height: var(--touch-target);
    background: var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--color-text-primary);
}

.mobile-nav__link {
    display: flex;
    align-items: center;
    padding: var(--space-4);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    min-height: var(--touch-target);
    transition: background var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link.is-active {
    background: var(--color-border);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-8) var(--space-4);
}

.footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer__contact {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    flex-wrap: wrap;
    margin-bottom: var(--space-5);
}

.footer__contact a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: color var(--transition-normal);
    min-height: var(--touch-target);
}

.footer__contact a:hover {
    color: var(--color-brand);
}

.footer__contact svg {
    width: 16px;
    height: 16px;
    color: var(--color-brand);
    flex-shrink: 0;
}

.footer__offices {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-5);
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
}

.footer__offices strong {
    color: var(--color-text-secondary);
}

.footer__offices a {
    color: var(--color-brand);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-normal);
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
}

.footer__offices a:hover {
    color: var(--color-text-primary);
    text-decoration: underline;
}

.footer__areas {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
    line-height: var(--line-height-relaxed);
}

.footer__areas strong {
    color: var(--color-text-secondary);
}

.footer__copyright {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

@media (max-width: 639px) {
    .footer__inner {
        text-align: left;
    }
    
    .footer__contact {
        flex-direction: column;
        gap: var(--space-3);
        align-items: flex-start;
    }
    
    .footer__offices {
        flex-direction: column;
        gap: var(--space-3);
        align-items: flex-start;
    }
}

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */
.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-10) var(--space-4) var(--space-16);
}

@media (min-width: 640px) {
    .main {
        padding: var(--space-12) var(--space-6) var(--space-20);
    }
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    min-height: var(--touch-target);
    transition: background var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn--primary {
    background: var(--color-brand);
    color: #fff;
}

.btn--primary:hover {
    background: var(--color-brand-dark);
    transform: translateY(-2px);
}

.btn--white {
    background: #fff;
    color: var(--color-brand);
}

.btn--white:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--color-border);
    color: var(--color-text-primary);
}

.btn--outline:hover {
    border-color: var(--color-brand);
    color: var(--color-brand);
}

.btn--outline-white {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #fff;
}

.btn--outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn--lg {
    padding: var(--space-5) var(--space-8);
    font-size: var(--font-size-lg);
}

/* ==========================================================================
   CARDS
   ========================================================================== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-brand);
}

/* ==========================================================================
   TABLES
   ========================================================================== */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: var(--space-6) 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table th,
.table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    background: var(--color-surface-elevated);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    white-space: nowrap;
}

.table td {
    color: var(--color-text-secondary);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: var(--color-surface-elevated);
}

.table--centered th,
.table--centered td {
    text-align: center;
}

.table--centered th:first-child,
.table--centered td:first-child {
    text-align: left;
}

/* ==========================================================================
   BADGES
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge--blue {
    background: rgba(74, 144, 217, 0.15);
    color: var(--color-brand);
}

.badge--green {
    background: rgba(56, 161, 105, 0.15);
    color: var(--color-success);
}

.badge--yellow {
    background: rgba(214, 158, 46, 0.15);
    color: var(--color-warning);
}

.badge--red {
    background: rgba(229, 62, 62, 0.15);
    color: var(--color-error);
}

.badge--purple {
    background: rgba(128, 90, 213, 0.15);
    color: var(--color-purple);
}

/* ==========================================================================
   SECTION STYLES
   ========================================================================== */
.section {
    margin-bottom: var(--space-16);
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.section__title {
    font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.cta {
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-dark));
    color: #fff;
    padding: var(--space-12) var(--space-8);
    border-radius: var(--radius-xl);
    text-align: center;
}

.cta__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-2);
}

.cta__subtitle {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--space-6);
}

.cta__buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

@media (max-width: 479px) {
    .cta__buttons {
        flex-direction: column;
    }
    
    .cta__buttons .btn {
        width: 100%;
    }
}

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

/* ==========================================================================
   PRINT
   ========================================================================== */
@media print {
    .header,
    .nav,
    .mobile-menu-toggle,
    .mobile-overlay,
    .mobile-nav,
    .theme-toggle,
    .cta {
        display: none !important;
    }
    
    body {
        background: #fff;
        color: #000;
    }
}