/* ============================================
   DATA PRIMALYTICS - Premium Consulting Theme
   ============================================ */

/* -------------------- 
   CSS Custom Properties 
   -------------------- */
:root {
    /* Backgrounds */
    --bg-primary: #050505;
    --bg-section-alt: #0a0f1a;
    --bg-card: #111827;
    --bg-card-hover: #1f2937;

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #64748b;

    /* Accent */
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.15);

    /* Borders */
    --border: #1e293b;
    --border-light: #334155;

    /* Typography Scale - Desktop */
    --text-hero: 3.75rem;
    --text-h1: 2.625rem;
    --text-h2: 1.875rem;
    --text-h3: 1.5rem;
    --text-body: 1.125rem;
    --text-small: 0.875rem;

    /* Font Weights */
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line Heights */
    --leading-tight: 1.2;
    --leading-normal: 1.6;
    --leading-relaxed: 1.8;

    /* Spacing */
    --section-padding-y: 120px;
    --section-padding-x: 32px;
    --container-max: 1100px;
    --container-narrow: 800px;

    /* Spacing Scale */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease-out;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--text-body);
    font-weight: var(--font-regular);
    line-height: var(--leading-normal);
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

/* -------------------- 
   Layout 
   -------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--section-padding-x);
}

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

.section {
    padding: var(--section-padding-y) 0;
    position: relative;
    z-index: 1;
}

.section-label {
    font-size: var(--text-small);
    font-weight: var(--font-semibold);
    letter-spacing: 0.2em;
    color: var(--accent);
    text-align: center;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
}

.section-title {
    font-size: var(--text-h1);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.section-intro {
    font-size: var(--text-body);
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-2xl);
}

/* -------------------- 
   Parallax Background Logo 
   -------------------- */
.parallax-logo {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50vw;
    max-width: 500px;
    opacity: 0.06;
    pointer-events: none;
    z-index: 0;
}

.parallax-logo img {
    width: 100%;
    height: auto;
}

/* -------------------- 
   Navigation 
   -------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 32px 0;
    background: rgba(5, 5, 5, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
}

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

.nav-logo img {
    height: 50px;
    width: auto;
    transform: scale(1);
    transform-origin: left center;
    margin-left: -40px;
}

/* Nav CTA */
.nav-cta {
    padding: 14px 28px;
    font-size: 1rem;
    margin-right: 12px;
}

/* Nav CTA - Desktop: text, Mobile: icon */
.nav-cta-icon {
    display: none;
}

.nav-cta-text {
    display: inline;
}

/* -------------------- 
   Buttons 
   -------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 14px 28px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: var(--font-medium);
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.125rem;
}

/* -------------------- 
   Hero Section 
   -------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--section-padding-y) var(--section-padding-x);
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    margin-top: calc(15vh - 14px);
}

.hero-label {
    font-size: var(--text-small);
    font-weight: var(--font-semibold);
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
}

.hero-headline {
    font-size: var(--text-hero);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-md);
}

.hero-subheadline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* -------------------- 
   Capabilities Section (Horizon Peak Style)
   -------------------- */
.section-capabilities {
    background: var(--bg-primary);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.capability-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-lg);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    min-height: 200px;
}

.capability-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px var(--accent-glow);
}

.capability-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-section-alt);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--accent);
}

.capability-title {
    font-size: 1.125rem;
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: var(--leading-tight);
}

.capability-short {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: var(--leading-normal);
    transition: opacity var(--transition-fast);
}

.capability-expanded {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: var(--leading-normal);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border);
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity var(--transition-normal), max-height var(--transition-normal);
}

.capability-card:hover .capability-expanded {
    opacity: 1;
    max-height: 100px;
}

.capabilities-footer {
    text-align: center;
    font-size: 1rem;
    color: var(--text-secondary);
    padding: var(--space-lg);
    background: var(--bg-section-alt);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.capabilities-footer strong {
    color: var(--text-primary);
}

/* -------------------- 
   Featured Engagements Section
   -------------------- */
.section-engagements {
    background: var(--bg-section-alt);
}

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

.engagement-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: var(--space-xl);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.engagement-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-light);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.engagement-title {
    font-size: var(--text-h3);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.engagement-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* -------------------- 
   Technologies Section
   -------------------- */
.section-technologies {
    background: var(--bg-primary);
    padding: var(--space-3xl) 0;
}

.tech-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
}

.tech-item {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-item:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.tech-logo {
    height: 32px;
    width: auto;
    opacity: 0.85;
    transition: opacity var(--transition-fast);
}

.tech-item:hover .tech-logo {
    opacity: 1;
}

.tech-name {
    font-size: 0.9375rem;
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

/* -------------------- 
   About Section 
   -------------------- */
.section-about {
    background: var(--bg-section-alt);
}

.about-content {
    text-align: center;
}

.about-bio {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-xl);
}

.founder-info {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.founder-label {
    font-size: var(--text-small);
    font-weight: var(--font-semibold);
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.founder-credentials {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: var(--leading-normal);
}

/* -------------------- 
   Footer 
   -------------------- */
.footer {
    background: var(--bg-primary);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    margin-bottom: var(--space-md);
}

.footer-tagline {
    font-size: 1rem;
    color: var(--text-secondary);
}

.footer-contact {
    display: flex;
    gap: var(--space-2xl);
}

.footer-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-label {
    font-size: var(--text-small);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-item a {
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.copyright {
    font-size: var(--text-small);
    color: var(--text-muted);
    text-align: center;
}

/* -------------------- 
   Scroll Animations 
   -------------------- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations for grid items */
.capabilities-grid .fade-in:nth-child(1) { transition-delay: 0s; }
.capabilities-grid .fade-in:nth-child(2) { transition-delay: 0.05s; }
.capabilities-grid .fade-in:nth-child(3) { transition-delay: 0.1s; }
.capabilities-grid .fade-in:nth-child(4) { transition-delay: 0.15s; }
.capabilities-grid .fade-in:nth-child(5) { transition-delay: 0.2s; }
.capabilities-grid .fade-in:nth-child(6) { transition-delay: 0.25s; }
.capabilities-grid .fade-in:nth-child(7) { transition-delay: 0.3s; }
.capabilities-grid .fade-in:nth-child(8) { transition-delay: 0.35s; }

.engagements-grid .fade-in:nth-child(1) { transition-delay: 0s; }
.engagements-grid .fade-in:nth-child(2) { transition-delay: 0.1s; }

/* -------------------- 
   Contact Modal 
   -------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-container {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.modal-content {
    padding: var(--space-xl);
}

.modal-title {
    font-size: var(--text-h2);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.modal-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--space-md);
}

/* Honeypot field - hidden from humans, catches bots */
.form-honeypot {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    height: 0;
    width: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.form-label {
    display: block;
    font-size: var(--text-small);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    margin-top: var(--space-sm);
    position: relative;
}

.btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    opacity: 0;
}

.btn-submit.loading .btn-loading {
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Success State */
.form-success {
    display: none;
    text-align: center;
    padding: var(--space-lg) 0;
}

.form-success.active {
    display: block;
}

.success-icon {
    color: #22c55e;
    margin-bottom: var(--space-md);
}

.success-title {
    font-size: var(--text-h3);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.success-text {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Error State */
.form-error {
    display: none;
    padding: var(--space-md);
    margin-top: var(--space-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
}

.form-error.active {
    display: block;
}

.error-text {
    font-size: var(--text-small);
    color: #ef4444;
}

.error-text a {
    color: inherit;
    text-decoration: underline;
}

/* Body scroll lock when modal is open */
body.modal-open {
    overflow: hidden;
}

/* -------------------- 
   Responsive Design 
   -------------------- */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --section-padding-y: 100px;
        --text-hero: 3rem;
        --text-h1: 2.25rem;
    }

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

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

/* Mobile */
@media (max-width: 768px) {
    :root {
        --section-padding-y: 64px;
        --section-padding-x: 20px;
        --text-hero: 2.25rem;
        --text-h1: 1.75rem;
        --text-h2: 1.5rem;
        --text-h3: 1.25rem;
        --text-body: 1rem;
    }

    .nav {
        padding: 24px 0;
    }

    .nav-cta-icon {
        display: block;
    }

    .nav-cta-text {
        display: none;
    }

    .nav-cta {
        padding: 9px;
        min-width: 36px;
        min-height: 36px;
        margin-right: 0;
    }

    .nav-container {
        padding: 0 var(--section-padding-x);
    }

    .nav-logo img {
        height: auto;
        width: clamp(150px, 40vw, 220px);
        margin-left: 0;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.875rem;
    }

    .btn-large {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .hero-subheadline {
        font-size: 1.125rem;
    }

    .capabilities-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .capability-card {
        min-height: auto;
        padding: var(--space-md);
    }

    /* Show expanded content on mobile since hover doesn't work well */
    .capability-expanded {
        opacity: 1;
        max-height: 100px;
    }

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

    .engagement-card {
        padding: var(--space-lg);
    }

    .tech-logos {
        gap: var(--space-sm);
    }

    .tech-item {
        padding: var(--space-xs) var(--space-sm);
    }

    .tech-name {
        font-size: 0.8125rem;
    }

    .about-bio {
        font-size: 1.125rem;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-xl);
    }

    .footer-contact {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .parallax-logo {
        width: 80vw;
        opacity: 0.04;
    }

    /* Modal Mobile */
    .modal-content {
        padding: var(--space-lg);
    }

    .modal-title {
        font-size: var(--text-h3);
        padding-right: var(--space-xl);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --text-hero: 2rem;
        --text-h1: 1.5rem;
    }

    .capability-title {
        font-size: 1rem;
    }

    .capability-short {
        font-size: 0.875rem;
    }

    .capability-expanded {
        font-size: 0.8125rem;
    }
}

/* -------------------- 
   Reduced Motion 
   -------------------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .fade-in {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }

    .capability-expanded {
        opacity: 1;
        max-height: 100px;
    }
}