:root {
    --bg-color: #0d1117;
    --card-bg-color: #161b22;
    --border-color: #30363d;
    --text-color: #c9d1d9;
    --text-muted-color: #8b949e;
    --gradient-start: #58a6ff;
    --gradient-end: #a371f7;
    --primary-gradient: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    --font-family: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    line-height: 1.6;
}

/* Global decorative aurora background */
.global-aurora {
    position: fixed;
    inset: -10% -10% auto -10%;
    height: 60vh;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(40% 60% at 10% 20%, rgba(88,166,255,0.18), transparent 60%),
                radial-gradient(35% 50% at 90% 10%, rgba(163,113,247,0.15), transparent 60%),
                radial-gradient(30% 40% at 40% 80%, rgba(88,166,255,0.12), transparent 60%);
    filter: blur(40px) saturate(120%);
    animation: auroraFloat 18s ease-in-out infinite alternate;
}

@keyframes auroraFloat {
    0% { transform: translateY(0) translateX(0) scale(1); opacity: 0.8; }
    50% { transform: translateY(12px) translateX(-8px) scale(1.03); opacity: 0.9; }
    100% { transform: translateY(-10px) translateX(10px) scale(1.04); opacity: 0.85; }
}

/* Canvas background */
.fx-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.3;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

h1, h2, h3 {
    line-height: 1.3;
    font-weight: 700;
}

h1 {
    font-size: clamp(2rem, 3.2vw + 1rem, 3.2rem);
    margin-bottom: 20px;
}

h2 {
    font-size: clamp(1.6rem, 2.2vw + 1rem, 2.5rem);
    text-align: center;
    margin-bottom: 60px;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #f0f6fc;
}

p {
    font-size: 1.1rem;
    color: var(--text-muted-color);
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.25);
}

.btn:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
}

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

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* Gradient shine on primary buttons */
.btn-primary::after {
    content: "";
    position: absolute;
    top: 0;
    left: -150%;
    width: 120%;
    height: 100%;
    background: linear-gradient(110deg, transparent 20%, rgba(255,255,255,0.28) 45%, transparent 70%);
    transform: skewX(-15deg);
    transition: left 0.6s ease;
}
.btn-primary:hover::after {
    left: 150%;
}

/* Header */
.main-header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    background-color: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.main-header nav a {
    position: relative;
}
.main-header nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 0%;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.25s ease;
}
.main-header nav a:hover::after {
    width: 100%;
}

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

.logo {
    display: inline-block;
    height: 45px;
    text-decoration: none;
}

.logo-image {
    height: 100%;
    width: auto;
    max-width: 220px;
    object-fit: contain;
}

.main-header nav a {
    color: var(--text-muted-color);
    text-decoration: none;
    margin-left: 25px;
    transition: color 0.2s ease;
}

.main-header nav a:hover {
    color: var(--gradient-start);
}

/* Hero Section */
.hero-image {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.reveal-on-load {
    opacity: 0;
    transform: translateY(14px) scale(0.99);
    animation: heroReveal 800ms cubic-bezier(.2,.65,.25,1) 120ms forwards;
}

@keyframes heroReveal {
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 500px;
}

.cta-buttons a {
    margin-right: 15px;
}

/* Magnetic button hover scale */
.btn.btn-primary {
    transform: translateY(0) scale(1);
}
.btn.btn-primary.magnet-hover {
    transform: translateY(-3px) scale(1.03);
}

.placeholder-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 350px;
    background-color: var(--card-bg-color);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    color: var(--text-muted-color);
    font-size: 1.2rem;
}

/* Problem Section */
.problem-grid, .benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: transform 0.3s ease, border-color 0.3s ease;
    will-change: transform;
    transform-style: preserve-3d;
}

.card:hover {
    transform: translateY(-5px) translateZ(0);
    border-color: var(--gradient-start);
    box-shadow: 0 18px 40px rgba(0,0,0,0.28);
}

/* Spotlight hover for cards */
.card {
    position: relative;
    overflow: hidden;
}
.card::before {
    content: "";
    position: absolute;
    top: var(--y, -200px);
    left: var(--x, -200px);
    width: 440px;
    height: 440px;
    background: radial-gradient(200px 200px at center, rgba(88,166,255,0.15), transparent 60%);
    transform: translate(-50%, -50%);
    transition: opacity 0.25s ease;
    opacity: 0;
    pointer-events: none;
}
.card:hover::before { opacity: 1; }

/* Solution Section */
.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}
.solution-text p {
    margin-bottom: 15px;
}

/* How It Works Section */
/* Traceability Card - Special Step 0 */
.traceability-card {
    position: relative;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px 25px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    margin-bottom: 30px;
}

.traceability-card .step-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}



.traceability-card h3 {
    margin: 0 0 15px 0;
    color: #f0f6fc;
    font-size: 1.4rem;
}

.traceability-card p {
    color: var(--text-muted-color);
    font-size: 1rem;
    margin: 0;
    line-height: 1.7;
}

/* Hover effect */
.traceability-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}
.step-card {
    position: relative;
    padding: 30px 20px;
    border-radius: 12px;
    background: rgba(22,27,34,0.6);
    border: 1px solid rgba(48,54,61,0.6);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.step-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 30px rgba(0,0,0,0.25);
    border-color: var(--gradient-start);
}
/* Spotlight hover for steps */
.step-card::before {
    content: "";
    position: absolute;
    top: var(--y, -200px);
    left: var(--x, -200px);
    width: 420px;
    height: 420px;
    background: radial-gradient(190px 190px at center, rgba(163,113,247,0.14), transparent 60%);
    transform: translate(-50%, -50%);
    transition: opacity 0.25s ease;
    opacity: 0;
    pointer-events: none;
}
.step-card:hover::before { opacity: 1; }
.step-number {
    position: absolute;
    top: 0;
    left: 20px;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(139, 148, 158, 0.1);
    z-index: -1;
}
.step-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    margin: 0 auto 20px;
}
.step-icon i {
    width: 32px;
    height: 32px;
}
.step-card h3 {
    text-align: center;
}
.step-card p {
    font-size: 1rem;
}

/* ROI Calculator Section */
.roi-calculator-section {
    background-color: var(--card-bg-color);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.roi-calculator-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    background-color: var(--bg-color);
    padding: 60px;
    border-radius: 16px;
}
.calculator-text h2 {
    text-align: left;
    margin-bottom: 20px;
}
.calculator-form {
    margin-top: 30px;
}
.input-group {
    margin-bottom: 20px;
}
.input-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted-color);
}
.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.input-group input:hover:not(:focus) {
    border-color: var(--text-muted-color);
}
.input-group input:focus {
    outline: none;
    border-color: var(--gradient-start);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}
.calculator-form .btn {
    width: 100%;
    text-align: center;
}
.roi-result {
    background: var(--primary-gradient);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    color: white;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.roi-result.visible {
    opacity: 1;
    transform: scale(1);
}
.roi-result p {
    color: rgba(255,255,255,0.8);
    font-size: 1.1rem;
}
.roi-result h2 {
    font-size: 4rem;
    color: white;
    margin: 10px 0;
}
.savings-description {
    font-size: 1.2rem !important;
    font-weight: 600;
    margin-bottom: 20px;
}

/* Final CTA Section */
.final-cta-section {
    text-align: center;
}
.final-cta-section h2 {
    margin-bottom: 20px;
}
.final-cta-section > .container > p {
    max-width: 600px;
    margin: 0 auto 40px;
}
.social-proof {
    margin-top: 40px;
    color: var(--text-muted-color);
}
.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 15px;
    align-items: center;
}
.placeholder-icon {
    padding: 8px 16px;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-weight: 500;
}

/* Founders Program Section */
.founders-section { position: relative; }
.founders-card {
    position: relative;
    background:
      linear-gradient(180deg, rgba(22,27,34,0.86), rgba(22,27,34,0.95)) padding-box,
      var(--primary-gradient) border-box;
    border: 1px solid transparent;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.35);
}
.founders-card::before {
    content: "";
    position: absolute;
    inset: -30% -10% auto -10%;
    height: 320px;
    background: radial-gradient(45% 60% at 20% 40%, rgba(88,166,255,0.18), transparent 60%),
                radial-gradient(35% 50% at 80% 20%, rgba(163,113,247,0.16), transparent 60%);
    filter: blur(40px);
    pointer-events: none;
}
.founders-content { padding: 48px; }
.founders-lead { max-width: 900px; margin: 12px 0 28px; font-size: 1.15rem; color: var(--text-muted-color); }
.founders-grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 32px; align-items: start; }
.founders-list { list-style: none; display: flex; flex-direction: column; gap: 18px; }
.founders-list li { display: grid; grid-template-columns: 48px 1fr; gap: 16px; align-items: start; background: rgba(13,17,23,0.5); border: 1px solid rgba(48,54,61,0.6); border-radius: 12px; padding: 18px; position: relative; overflow: hidden; }
.founders-list li::after { content: ""; position: absolute; top: var(--y, -200px); left: var(--x, -200px); width: 420px; height: 420px; transform: translate(-50%, -50%); background: radial-gradient(190px 190px at center, rgba(88,166,255,0.1), transparent 60%); opacity: 0; transition: opacity 0.25s ease; pointer-events: none; }
.founders-list li:hover::after { opacity: 1; }
.founders-list h3 { margin: 0 0 6px; font-size: 1.25rem; color: #f0f6fc; }
.founders-list .bullet { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-gradient); color: white; box-shadow: 0 10px 25px rgba(0,0,0,0.3); }
.founders-side { background: rgba(13,17,23,0.6); border: 1px solid rgba(48,54,61,0.6); border-radius: 14px; padding: 24px; text-align: center; position: sticky; top: 100px; box-shadow: 0 18px 40px rgba(0,0,0,0.28); }
.spots { display: grid; place-items: center; margin-bottom: 16px; }
.spots-count { font-size: 3rem; font-weight: 800; background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; text-fill-color: transparent; filter: drop-shadow(0 4px 18px rgba(88,166,255,0.35)); }
.founders-side .btn { width: 100%; }
.spots-label { color: var(--text-muted-color); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.8rem; }
.founders-note { font-size: 0.98rem; color: var(--text-muted-color); margin: 10px 0 18px; }

@media (max-width: 900px) {
  .founders-content { padding: 28px; }
  .founders-grid { grid-template-columns: 1fr; }
  .founders-side { position: static; }
}

/* Back to top button */
#back-to-top {
    position: fixed;
    right: 24px;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: rgba(22,27,34,0.85);
    color: var(--text-color);
    display: grid;
    place-items: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.35);
    cursor: pointer;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s ease, border-color 0.2s ease;
    z-index: 150;
}
#back-to-top:hover { background: rgba(22,27,34,0.95); border-color: var(--gradient-start); }
#back-to-top.visible { opacity: 1; transform: translateY(0); }

/* Scroll progress bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: var(--primary-gradient);
    z-index: 2000;
    box-shadow: 0 0 12px rgba(88,166,255,0.6);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 200;
}
.modal.show {
    visibility: visible;
    opacity: 1;
}
.modal-content {
    position: relative;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 30px;
    width: 90%;
    max-width: 420px;
    text-align: center;
}
.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-muted-color);
    font-size: 1.5rem;
    cursor: pointer;
}
#signup-form input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    margin-bottom: 20px;
}
#signup-form input:focus {
    outline: none;
    border-color: var(--gradient-start);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}
.modal-success {
    text-align: center;
    color: #58a6ff;
    font-weight: 600;
}

.lead-magnet-link {
    margin-top: 20px;
    padding: 20px;
    background: rgba(88, 166, 255, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(88, 166, 255, 0.3);
}

.lead-magnet-link p {
    margin-bottom: 15px;
    color: var(--text-color);
}

.lead-magnet-link .btn {
    margin: 10px 0;
    font-size: 1.1rem;
    padding: 15px 30px;
}

.small-text {
    font-size: 0.9rem !important;
    color: var(--text-muted-color) !important;
    margin-top: 10px;
}

/* Footer */
.main-footer {
    padding: 40px 0;
    text-align: center;
    color: var(--text-muted-color);
    border-top: 1px solid var(--border-color);
}

/* Scroll Animation */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Parallax container helper (for hero image subtle movement) */
.hero-visual { position: relative; perspective: 800px; }
.hero-image { transform: translateZ(0); transition: transform 0.2s ease-out; }

/* Tablet tweaks */
@media (max-width: 1200px) {
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-content, .solution-content { gap: 40px; }
    .founders-content { padding: 36px; }
}

@media (max-width: 900px) {
    .hero-content, .solution-content, .roi-calculator-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-text, .solution-text {
        order: 2;
    }
    .hero-visual, .solution-visual {
        order: 1;
        margin-bottom: 40px;
    }
     .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }
    h1 { font-size: clamp(1.9rem, 5.2vw, 2.5rem); }
    h2 { font-size: clamp(1.4rem, 4.5vw, 2rem); }
    .problem-grid, .benefits-grid, .steps-grid {
        grid-template-columns: 1fr;
    }
    .roi-calculator-content { padding: 24px; }
    /* Founders mobile - stronger styling */
    .founders-content { text-align: center; }
    .founders-lead { margin-left: auto; margin-right: auto; }
    .founders-grid { gap: 20px; }
    .founders-list li { grid-template-columns: 40px 1fr; padding: 16px; }
    .founders-list .bullet { width: 40px; height: 40px; }
    .main-header nav {
        display: none; /* Simple responsive solution */
    }
}

@media (max-width: 600px) {
    .container { padding: 0 16px; }
    section { padding: 64px 0; }
    .hero-text p { font-size: 1.05rem; }
    .cta-buttons a { width: 100%; margin-right: 0; margin-top: 12px; text-align: center; }
    .spots-count { font-size: clamp(2rem, 10vw, 3rem); }
    .founders-content { padding: 22px; }
    .founders-list { gap: 12px; }
    .founders-side { margin-top: 12px; }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
    .global-aurora { animation: none !important; }
    .reveal-on-load { animation: none !important; opacity: 1 !important; transform: none !important; }
}