/**
 * Sosanolí Main Stylesheet
 * Conservative professional design for government contracting services
 */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
    /* Color Palette - Professional Navy & Gold */
    --color-primary: #1a365d;
    --color-primary-dark: #0f2442;
    --color-primary-light: #2c5282;
    --color-secondary: #b8860b;
    --color-secondary-dark: #8b6914;
    --color-secondary-light: #d4a017;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-off-white: #f7f9fc;
    --color-gray-100: #edf2f7;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e0;
    --color-gray-400: #a0aec0;
    --color-gray-500: #718096;
    --color-gray-600: #4a5568;
    --color-gray-700: #2d3748;
    --color-gray-800: #1a202c;
    --color-black: #0a0a0a;
    
    /* Semantic Colors */
    --color-text: var(--color-gray-800);
    --color-text-muted: var(--color-gray-600);
    --color-text-light: var(--color-gray-500);
    --color-background: var(--color-white);
    --color-background-alt: var(--color-off-white);
    --color-border: var(--color-gray-200);
    
    /* Typography */
    --font-family-base: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-family-heading: 'Georgia', 'Times New Roman', 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;
    
    --line-height-tight: 1.25;
    --line-height-base: 1.6;
    --line-height-relaxed: 1.75;
    
    /* 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;
    --space-24: 6rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: var(--space-4);
    
    /* Borders */
    --border-radius-sm: 0.25rem;
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-header: 200;
    --z-modal: 300;
}

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

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-primary);
}

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

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

ul, ol {
    list-style: none;
}

address {
    font-style: normal;
}

/* ========================================
   Accessibility
   ======================================== */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: var(--z-modal);
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius);
    transition: top var(--transition-fast);
}

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

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

/* ========================================
   Layout Utilities
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--space-4);
}

.site-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.site-logo:hover .logo-text,
.site-logo:focus .logo-text {
    color: var(--color-primary-light);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: var(--space-2);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus {
    background-color: var(--color-gray-100);
}

.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Navigation */
.primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.primary-nav.is-open {
    display: block;
}

.nav-list {
    display: flex;
    flex-direction: column;
}

.nav-item {
    border-top: 1px solid var(--color-border);
}

.nav-link {
    display: block;
    padding: var(--space-4) var(--container-padding);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-off-white);
}

/* Desktop Navigation */
@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
    
    .primary-nav {
        display: block;
        position: static;
        background: transparent;
        border: none;
        box-shadow: none;
    }
    
    .nav-list {
        flex-direction: row;
        gap: var(--space-1);
    }
    
    .nav-item {
        border: none;
    }
    
    .nav-link {
        padding: var(--space-2) var(--space-4);
        border-radius: var(--border-radius);
    }
    
    .nav-link:hover,
    .nav-link:focus {
        background-color: var(--color-gray-100);
    }
    
    .nav-link.active {
        background-color: var(--color-primary);
        color: var(--color-white);
    }
    
    .nav-link.active:hover {
        background-color: var(--color-primary-light);
        color: var(--color-white);
    }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

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

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ========================================
   Section Headings
   ======================================== */
.section-heading {
    font-size: var(--font-size-3xl);
    text-align: center;
    margin-bottom: var(--space-10);
    position: relative;
}

.section-heading::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--color-secondary);
    margin: var(--space-4) auto 0;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 500px;
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><rect fill="rgba(255,255,255,0.03)" width="50" height="50"/><rect fill="rgba(255,255,255,0.03)" x="50" y="50" width="50" height="50"/></svg>');
    background-size: 40px 40px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-4xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-200);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.hero-cta {
    font-size: var(--font-size-lg);
    padding: var(--space-4) var(--space-8);
}

@media (min-width: 768px) {
    .hero {
        min-height: 600px;
        padding: var(--space-24) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
}

/* ========================================
   Overview Section
   ======================================== */
.overview {
    padding: var(--space-16) 0;
    background-color: var(--color-background);
}

.overview-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.overview-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
}

@media (min-width: 768px) {
    .overview {
        padding: var(--space-20) 0;
    }
    
    .overview-text {
        font-size: var(--font-size-xl);
    }
}

/* ========================================
   Services Section
   ======================================== */
.services {
    padding: var(--space-16) 0;
    background-color: var(--color-background-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    text-align: center;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-4);
    background-color: var(--color-primary);
    border-radius: 50%;
}

.icon-placeholder {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.service-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

.service-brief {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
}

.service-link:hover,
.service-link:focus {
    color: var(--color-secondary-dark);
}

@media (min-width: 640px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services {
        padding: var(--space-20) 0;
    }
    
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .service-card {
        padding: var(--space-6);
    }
}

/* ========================================
   Certifications Section
   ======================================== */
.certifications {
    padding: var(--space-16) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.certifications .section-heading {
    color: var(--color-white);
}

.certifications .section-heading::after {
    background-color: var(--color-secondary);
}

.certifications-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.certification-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-4);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
}

.cert-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-1);
}

.cert-status {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-secondary-light);
    margin-bottom: var(--space-1);
}

.cert-description {
    font-size: var(--font-size-xs);
    color: var(--color-gray-300);
}

@media (min-width: 768px) {
    .certifications {
        padding: var(--space-20) 0;
    }
    
    .certifications-list {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-6);
    }
    
    .certification-item {
        padding: var(--space-6);
    }
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    padding: var(--space-16) 0;
    background-color: var(--color-background-alt);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
}

.cta-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.cta-button {
    font-size: var(--font-size-lg);
    padding: var(--space-4) var(--space-8);
}

@media (min-width: 768px) {
    .cta-section {
        padding: var(--space-24) 0;
    }
    
    .cta-title {
        font-size: var(--font-size-4xl);
    }
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background-color: var(--color-gray-800);
    color: var(--color-gray-300);
    padding: var(--space-12) 0 var(--space-6);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-10);
}

.footer-section {
    text-align: center;
}

.footer-heading {
    font-family: var(--font-family-base);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-tagline {
    color: var(--color-gray-400);
    margin-bottom: var(--space-4);
}

.footer-address p {
    margin-bottom: var(--space-2);
}

.footer-nav li {
    margin-bottom: var(--space-2);
}

.footer-link {
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.footer-link:hover,
.footer-link:focus {
    color: var(--color-white);
}

.footer-credentials li {
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
}

.footer-credentials strong {
    color: var(--color-gray-400);
}

.footer-bottom {
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-gray-700);
    text-align: center;
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        text-align: left;
    }
    
    .footer-section {
        text-align: left;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .site-header,
    .mobile-menu-toggle,
    .hero-cta,
    .cta-section,
    .site-footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
    
    .hero {
        background: none;
        color: #000;
        min-height: auto;
        padding: 1rem 0;
    }
    
    .hero-title,
    .section-heading {
        color: #000;
    }
}

/* ========================================
   Inner Pages Styles
   ======================================== */
.page-header {
    padding: var(--space-12) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.page-header h1 {
    font-size: var(--font-size-4xl);
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.page-header .subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
}

.section-padding {
    padding: var(--space-16) 0;
}

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}
@media (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* About Page */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    align-items: center;
}
@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}
.about-text h2 { margin-bottom: var(--space-4); }
.about-text p { margin-bottom: var(--space-4); line-height: var(--line-height-relaxed); }

/* Certifications Page */
.cert-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius);
    overflow: hidden;
}
.cert-table th, .cert-table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}
.cert-table th { background-color: var(--color-gray-100); font-weight: var(--font-weight-bold); }
.badge { display: inline-block; padding: var(--space-1) var(--space-2); background: var(--color-secondary); color: var(--color-white); border-radius: var(--border-radius-sm); font-size: var(--font-size-xs); font-weight: bold; }

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
}
@media (min-width: 768px) {
    .contact-grid { grid-template-columns: 1fr 2fr; }
}
.contact-info {
    background: var(--color-gray-100);
    padding: var(--space-6);
    border-radius: var(--border-radius);
}
.info-list li { margin-bottom: var(--space-2); }
.form-group { margin-bottom: var(--space-4); }
.form-group label { display: block; font-weight: var(--font-weight-semibold); margin-bottom: var(--space-1); }
.form-control { width: 100%; padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--border-radius); font-size: var(--font-size-base); }
.form-control:focus { outline: none; border-color: var(--color-secondary); box-shadow: 0 0 0 2px rgba(184,134,11,0.2); }
.w-100 { width: 100%; }
.mt-4 { margin-top: var(--space-4); }

/* Legal Pages */
.legal-text h2 { margin: var(--space-6) 0 var(--space-3); }
.legal-text p { margin-bottom: var(--space-3); line-height: var(--line-height-relaxed); }