:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --accent: #2dd4bf;
    --accent-hover: #5eead4;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --glow: rgba(45, 212, 191, 0.2);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

h1, h2, h3, .logo {
    font-family: 'Outfit', sans-serif;
}

/* Background Blobs */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: move 20s infinite alternate;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--accent);
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: #6366f1;
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.blob-3 {
    width: 300px;
    height: 300px;
    background: #ec4899;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-duration: 30s;
}

@keyframes move {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 100px) scale(1.1); }
}

/* Header */
header {
    padding: 2rem 5%;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.logo span {
    color: var(--accent);
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 300;
}

/* Hero Section */
.hero {
    padding: 100px 5% 50px;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero h1 span {
    color: var(--accent);
    position: relative;
    display: inline-block;
}

.hero h1 span::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--glow);
    z-index: -1;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--glow);
}

.btn-outline {
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

/* Canvas Switcher */
.canvas-switcher {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem;
    border-radius: 50px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid var(--glass-border);
}

.toggle-btn {
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.toggle-btn.active {
    background: var(--accent);
    color: var(--bg-dark);
}

.toggle-btn:not(.active):hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* Lean Canvas Grid */
.canvas-section {
    padding: 80px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.canvas-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: auto auto auto;
    gap: 1.5rem;
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 1.5rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.card-header {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 1rem;
    font-weight: 700;
}

.card-body h3 {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.card-body ul {
    list-style: none;
}

.card-body ul li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    position: relative;
    padding-left: 1.2rem;
}

.card-body ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.sub-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.uvp-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.row-span-2 { grid-row: span 2; }

/* Cost/Revenue Row */
.canvas-grid > div:nth-last-child(2),
.canvas-grid > div:nth-last-child(1) {
    grid-row: 3;
    min-height: 200px;
}

.split-body {
    display: flex;
    gap: 2rem;
}

/* Concept Section */
.concept-section {
    padding: 4rem;
    margin: 80px 5%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.concept-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.concept-item {
    text-align: center;
}

.concept-item .icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.concept-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

/* Footer */
footer {
    padding: 4rem 5%;
    border-top: 1px solid var(--glass-border);
    margin-top: 50px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-weight: 700;
    font-size: 1.5rem;
}

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

/* Animations */
.animate-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 1100px) {
    .canvas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .col-span-1, .col-span-2, .row-span-2 {
        grid-column: span 1;
        grid-row: span 1;
    }
    .hero h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .canvas-grid {
        grid-template-columns: 1fr;
    }
    nav {
        flex-direction: column;
        gap: 1rem;
    }
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}