/* ===================================
   APEX DIGITAL SOLUTIONS - MAIN STYLESHEET
   =================================== */

/* ===================================
   CSS Variables & Root Styles
   =================================== */
:root {
    /* Color Palette */
    --color-primary-navy: #1A365D;
    --color-accent-teal: #0891B2;
    --color-dark-text: #374151;
    --color-light-gray-bg: #F9FAFB;
    --color-white: #FFFFFF;
    --color-footer-dark: #374151;
    --color-footer-light: #D1D5DB;
    
    /* Typography */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    --spacing-3xl: 8rem;
    
    /* Layout */
    --max-width: 1200px;
    --max-width-narrow: 800px;
    --border-radius: 8px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-dark-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary-navy);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
}

h4 {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 600;
}

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

a {
    color: var(--color-accent-teal);
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

/* ===================================
   Layout Containers
   =================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-narrow {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-3xl) 0;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    background: var(--color-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo img {
    height: 50px;
    width: auto;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-primary-navy);
    transition: var(--transition-normal);
}

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

.nav-link {
    color: var(--color-dark-text);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent-teal);
}

.nav-cta {
    background: var(--color-accent-teal);
    color: var(--color-white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all var(--transition-normal);
}

.nav-cta:hover {
    background: var(--color-primary-navy);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--color-primary-navy);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-accent-teal);
    border: 2px solid var(--color-accent-teal);
}

.btn-secondary:hover {
    background: var(--color-accent-teal);
    color: var(--color-white);
}

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    background: var(--color-white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    background-image: url('images/apex-watermark.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.15;
    z-index: 0;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-dark-text);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: 1rem;
    color: var(--color-dark-text);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

/* ===================================
   Cards
   =================================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card h3 {
    margin-bottom: var(--spacing-sm);
}

.card p {
    color: var(--color-dark-text);
    line-height: 1.7;
}

.card-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-accent-teal);
    font-weight: 600;
}

.card-link:hover {
    color: var(--color-primary-navy);
}

/* ===================================
   Team Cards
   =================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.team-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.team-photo {
    width: 100%;
    height: auto;
    display: block;
}

.team-info {
    padding: var(--spacing-md);
}

.team-name {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.team-title {
    color: var(--color-accent-teal);
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.team-bio {
    color: var(--color-dark-text);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

/* ===================================
   Sections with Backgrounds
   =================================== */
.section-white {
    background: var(--color-white);
}

.section-gray {
    background: var(--color-light-gray-bg);
}

.section-navy {
    background: var(--color-primary-navy);
    color: var(--color-white);
}

.section-navy h1,
.section-navy h2,
.section-navy h3 {
    color: var(--color-white);
}

.section-navy p {
    color: rgba(255, 255, 255, 0.9);
}

/* Fix card text in navy sections */
.section-navy .card h3 {
    color: var(--color-primary-navy);
}

.section-navy .card p {
    color: var(--color-dark-text);
}

.section-with-watermark {
    position: relative;
    overflow: hidden;
}

.section-with-watermark::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background-image: url('images/apex-watermark.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.10;
    z-index: 0;
}

.section-with-watermark > * {
    position: relative;
    z-index: 1;
}

/* ===================================
   Page Headers
   =================================== */
.page-header {
    background: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 400px;
    height: 400px;
    background-image: url('images/apex-watermark.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.15;
    z-index: 0;
}

.page-header > * {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header-subtitle {
    font-size: 1.25rem;
    color: var(--color-dark-text);
    max-width: 700px;
    margin: 0 auto;
}

/* ===================================
   Value Props / Features Grid
   =================================== */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.value-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.value-item p {
    color: var(--color-dark-text);
    line-height: 1.7;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-primary-navy);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #E5E7EB;
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-normal);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent-teal);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.form-note {
    font-size: 0.875rem;
    color: var(--color-dark-text);
    margin-top: 0.5rem;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-footer-dark);
    color: var(--color-footer-light);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand img {
    height: 40px;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.footer h4 {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 0.5rem;
}

.footer a {
    color: var(--color-footer-light);
}

.footer a:hover {
    color: var(--color-accent-teal);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.875rem;
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.text-teal {
    color: var(--color-accent-teal);
}

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

.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); }

.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); }

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .card-grid,
    .value-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--color-white);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-md) 0;
        box-shadow: var(--shadow-md);
        transition: left var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
        border-bottom: 1px solid #E5E7EB;
    }
    
    .nav-cta {
        margin: var(--spacing-sm) var(--spacing-md);
        width: calc(100% - 2rem);
        text-align: center;
    }
    
    /* Stacked layouts */
    .card-grid,
    .team-grid,
    .value-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    /* Reduce spacing */
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}