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

:root {
    /* PineRiverData Brand Colors */
    --primary-dark: #0F2B47;        /* Deep Navy / Midnight Blue - Primary brand color */
    --primary-color: #1E40AF;       /* Core Blue - HubSpot-inspired blue */
    --primary-light: #60A5FA;       /* Light Blue - Accents and highlights */
    --accent-orange: #FF5C35;       /* HubSpot Orange - CTA and emphasis */
    --accent-pine: #2D8A6B;         /* Pine Green - Secondary accent (optional) */
    --dark-gray: #475569;           /* Slate Gray - Secondary text */
    --medium-gray: #767676;
    --light-gray: #E2E8F0;          /* Very light cool gray - Backgrounds */
    --off-white: #F7F7F7;
    --white: #FFFFFF;
    --text-primary: #0F2B47;        /* Dark navy for headings */
    --text-secondary: #475569;      /* Slate gray for body text */

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Border Radius (Airbnb style) */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 6px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 10px 28px rgba(0, 0, 0, 0.15);

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

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

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

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

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

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

.nav-links a {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.nav-links .btn-primary-small {
    color: var(--white);
}

.nav-links .btn-primary-small:hover {
    color: var(--white);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--dark-gray);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ==========================================
   Buttons
   ========================================== */
.btn-primary,
.btn-secondary,
.btn-primary-small {
    display: inline-block;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    background-color: var(--dark-gray);
    color: var(--white);
}

.btn-primary-small {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.2);
    transition: all 0.3s ease;
}

.btn-primary-small:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    background: linear-gradient(135deg, rgba(248, 249, 250, 0.7) 0%, rgba(255, 255, 255, 0.85) 100%), url('pineriverdata-hero.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: var(--spacing-xxl) 0 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.05) 0%, rgba(96, 165, 250, 0.08) 100%);
    border-radius: 0 0 0 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.hero-badges {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-weight: 500;
    color: var(--dark-gray);
}

.badge svg {
    color: var(--accent-pine);
}

/* ==========================================
   Section Styles
   ========================================== */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Services Section
   ========================================== */
.services {
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.service-icon svg {
    color: var(--white);
}

.service-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.service-card > p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.service-features {
    list-style: none;
    padding-left: 0;
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-pine);
    font-weight: bold;
}

/* ==========================================
   Case Studies Section
   ========================================== */
.case-studies {
    background-color: var(--off-white);
}

.case-study-cards {
    display: grid;
    gap: var(--spacing-xl);
}

.case-study-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.case-study-card:hover {
    box-shadow: var(--shadow-xl);
}

.case-study-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--light-gray);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.company-info h3 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.company-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--accent-orange);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.case-study-stats {
    display: flex;
    gap: var(--spacing-lg);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.case-study-content h4 {
    color: var(--text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.case-study-content h4:first-child {
    margin-top: 0;
}

.solution-list {
    list-style: none;
    padding-left: 0;
}

.solution-list li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.solution-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.result-item {
    padding: var(--spacing-md);
    background-color: var(--off-white);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-pine);
    color: var(--text-secondary);
}

.result-item strong {
    color: var(--text-primary);
}

/* ==========================================
   Experience Section
   ========================================== */
.experience {
    background-color: var(--white);
}

.experience-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.experience-text h2 {
    margin-bottom: var(--spacing-xl);
}

.experience-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.experience-point {
    display: flex;
    gap: var(--spacing-md);
}

.point-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.point-icon svg {
    color: var(--white);
}

.point-content h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.point-content p {
    color: var(--text-secondary);
}

.stats-card {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.stat-item p {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.875rem;
}

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    background: linear-gradient(135deg, var(--dark-gray) 0%, var(--text-primary) 100%);
    color: var(--white);
    padding: 5rem 0;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--white);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.cta-content > p {
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.contact-form {
    background-color: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 90, 95, 0.1);
}

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

.contact-form .btn-primary {
    width: 100%;
    margin-top: var(--spacing-md);
    padding: 1rem;
    font-size: 1.125rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md);
}

.footer-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-badge {
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

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

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 968px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .experience-content {
        grid-template-columns: 1fr;
    }

    .stats-card {
        grid-template-columns: 1fr 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-badges {
        flex-direction: column;
    }

    .case-study-header {
        flex-direction: column;
    }

    .case-study-stats {
        width: 100%;
        justify-content: space-around;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-title {
        font-size: 2rem;
    }

    .stats-card {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Accessibility
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }