:root {
    --primary: #0080FF;
    --primary-container: #255d9c;
    --surface: #f7f9fb;
    --on-surface: #191c1e;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--surface);
    color: var(--on-surface);
    letter-spacing: -0.01em;
}

h1, h2, h3, h4 {
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.glass-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 1.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
    background-color: #006fe6;
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -8px rgba(0, 128, 255, 0.28);
}

.screenshot-card {
    overflow: hidden;
    border-radius: 1rem;
    background: white;
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.screenshot-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.1);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.section-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

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

#lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 15, 30, 0.95);
    z-index: 1000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    backdrop-filter: blur(8px);
}

#lightbox.active {
    display: flex;
}

#lightbox img {
    max-width: 90%;
    max-height: 75vh;
    border-radius: 1rem;
    box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.5);
}

.solution-icon-wrapper {
    transition: all 0.3s ease;
}

.solution-card:hover .solution-icon-wrapper {
    transform: scale(1.1) rotate(3deg);
    background-color: var(--primary);
    color: white;
}