/* 
  LINTCAPITAL – PREMIUM PRIVATE EQUITY DESIGN SYSTEM
  Institutional-grade styling for a global PE fund.
*/

:root {
    /* Color Palette */
    --bg-primary: #000000;
    /* Deep Black Background */
    --bg-secondary: #050A15;
    /* Navy Blue Tonal Background */
    --accent-gold: #C6A14A;
    /* Glowing Yellow Gold */
    --accent-gold-bright: #FFD700;
    /* Bright Blowing Gold for highlights */
    --text-primary: #FFFFFF;
    /* Pure White Text */
    --text-secondary: #B0B8C8;
    /* Muted Navy/Grey Text */
    --border-color: rgba(198, 161, 74, 0.3);
    /* Gold borders */
    --glow-gold: rgba(198, 161, 74, 0.5);
    /* Gold glow effect */

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-heading-weight: 500;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --space-unit: 8px;
    --section-padding-desktop: 120px;
    --section-padding-mobile: 64px;
    --container-max-width: 1100px;

    /* Transitions */
    --transition-smooth: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

/* 21st.dev Inspired Grid Pattern */
.grid-pattern {
    position: relative;
    overflow: hidden;
}

.grid-pattern::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(to right, rgba(5, 10, 21, 0.3) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(198, 161, 74, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    z-index: 1;
    pointer-events: none;
    opacity: var(--grid-opacity, 1);
}

.hero.grid-pattern::after {
    --grid-opacity: 0.15;
}

/* Abstract CSS Art: Floating Institutional Orbs */
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.15;
    animation: float 20s infinite alternate ease-in-out;
}

.orb-gold {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-gold) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    filter: blur(120px);
}

.orb-navy {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, #050A15 0%, transparent 70%);
    bottom: -300px;
    left: -200px;
    filter: blur(120px);
}

@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(50px, 30px) scale(1.1);
    }
}

/* Abstract Shape: Structural Line Accent */
.line-accent {
    position: relative;
    padding-left: 24px;
}

.line-accent::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent-gold-bright), transparent);
    box-shadow: 0 0 10px var(--glow-gold);
}

/* Abstract Shape: Geometric Pillar Art */
.geometric-pillar {
    position: absolute;
    right: 5%;
    bottom: 0;
    width: 300px;
    height: 500px;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    z-index: 1;
    opacity: 0.2;
    pointer-events: none;
}

.pillar-bar {
    width: 2px;
    background: linear-gradient(to top, var(--accent-gold-bright), transparent);
    height: 0%;
    animation: growPillar 2s forwards cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 5px var(--glow-gold);
}

@keyframes growPillar {
    to {
        height: var(--h);
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
.serif {
    font-family: var(--font-heading);
    font-weight: var(--font-heading-weight);
    color: var(--text-primary);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 calc(var(--space-unit) * 4);
    position: relative;
    z-index: 2;
}

/* Blur Reveal Base */
.blur-reveal {
    filter: blur(12px);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.blur-reveal.active {
    filter: blur(0);
    opacity: 1;
    transform: translateY(0);
}

/* Typography Utilities */
.text-gold {
    color: var(--accent-gold);
}

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

.uppercase {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    font-family: var(--font-body);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
    cursor: pointer;
    border: 1px solid var(--accent-gold);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    background: transparent;
    color: var(--accent-gold);
}

.btn-primary {
    background-color: var(--accent-gold-bright);
    color: #000;
    box-shadow: 0 0 20px var(--glow-gold);
    border: none;
}

.btn:hover {
    background-color: var(--accent-gold-bright);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--accent-gold);
}

/* Shimmer Button (Premium CTA) */
.btn-shimmer {
    background: var(--bg-primary);
    color: var(--accent-gold);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.btn-shimmer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right,
            transparent,
            rgba(198, 161, 74, 0.2),
            transparent);
    transform: skewX(-25deg);
    transition: 0.75s;
}

.btn-shimmer:hover::before {
    left: 150%;
}

.btn-primary:hover {
    background-color: var(--accent-gold-hover);
    border-color: var(--accent-gold-hover);
}

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

.btn-restrained:hover {
    border-color: var(--accent-gold);
    color: var(--text-primary);
}

/* Investor Qualification Steps */
.step-container {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.step-container.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* DDE Diagram Styles */
.dde-diagram {
    display: flex;
    justify-content: space-between;
    margin-top: 60px;
}

.dde-node {
    flex: 1;
    border: 1px solid var(--border-color);
    padding: 30px;
    text-align: center;
    position: relative;
}

.dde-node:not(:last-child)::after {
    content: '→';
    position: absolute;
    right: -15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-gold);
    z-index: 5;
}

/* Quarterly Letter Cards */
.letter-card {
    border-left: 2px solid var(--accent-gold);
    padding-left: 30px;
}

.letter-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-gold);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.letter-meta::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-gold);
    border-radius: 1px;
    display: inline-block;
}

@media (max-width: 768px) {
    .dde-diagram {
        flex-direction: column;
        gap: 30px;
    }

    .dde-node:not(:last-child)::after {
        content: '↓';
        right: 50%;
        bottom: -25px;
        top: auto;
        transform: translateX(50%);
    }

    .hero {
        padding-top: 100px;
    }
}

/* Navigation */
nav#navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    height: 80px;
    display: flex;
    align-items: center;
    transition: var(--transition-smooth);
    background: transparent;
}

nav#navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
    height: 70px;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: 2px;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(198, 161, 74, 0.3);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-gold-bright);
    text-shadow: 0 0 10px var(--glow-gold);
}

/* Mobile Nav Toggle */
.mobile-toggle {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, rgba(5, 10, 21, 0.2) 0%, var(--bg-primary) 100%),
        linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
    background-size: cover;
    background-position: center;
    padding-top: 120px;
    padding-bottom: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 140%;
    height: 140%;
    background: radial-gradient(circle at center, rgba(198, 161, 74, 0.03) 0%, transparent 50%);
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.hero-content::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle at center, rgba(198, 161, 74, 0.08) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(3rem, 7vw, 5rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
}


.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Page Headers */
.page-header {
    padding-top: 180px;
    padding-bottom: 100px;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

@media (max-width: 768px) {
    .page-header {
        padding-top: 120px;
        padding-bottom: 60px;
    }
}

/* Sections */
section {
    padding: var(--section-padding-desktop) 0;
}

.section-header {
    margin-bottom: 60px;
    max-width: 600px;
}

.section-label {
    display: block;
    color: var(--accent-gold);
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 32px;
    font-weight: var(--font-heading-weight);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

/* Bento Grid Layout */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: minmax(200px, auto);
    gap: 20px;
}

.bento-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 30px;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.bento-item:hover {
    border-color: var(--accent-gold-bright);
    box-shadow: 0 0 20px rgba(198, 161, 74, 0.1);
}

.bento-item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.bento-item-tall {
    grid-row: span 2;
}

.bento-item-wide {
    grid-column: span 2;
}

/* Grid & Cards */
.grid {
    display: grid;
    gap: 32px;
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

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

.card {
    background: var(--bg-secondary);
    padding: 40px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    box-shadow: inset 0 0 20px rgba(198, 161, 74, 0.05);
}

.card:hover {
    border-color: var(--accent-gold-bright);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(198, 161, 74, 0.1);
}

.card h3 {
    margin-bottom: 16px;
    font-weight: 600;
    font-size: 1.4rem;
}

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

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(transparent, rgba(11, 15, 26, 0.9));
    transition: var(--transition-smooth);
}

/* Forms */
.contact-form {
    background: var(--bg-secondary);
    padding: 60px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 16px;
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-gold);
}

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

/* Footer */
footer {
    background: var(--bg-secondary);
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 20px;
    display: block;
}

.footer-links h4 {
    margin-bottom: 24px;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--accent-gold-bright);
}

.footer-disclaimer {
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .mobile-toggle {
        display: block;
    }

    .grid-3,
    .grid-2,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    section {
        padding: var(--section-padding-mobile) 0;
    }

    .contact-form {
        padding: 30px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}