:root {
    /* M3 Dark Palette Tokens */
    --md-sys-color-surface: #111318;
    --md-sys-color-surface-container: #1E2025;
    --md-sys-color-primary: #A8C7FF;
    --md-sys-color-on-primary: #003062;
    --md-sys-color-on-surface: #E2E2E6;
    --md-sys-color-outline-variant: #44474E;
    --ease: cubic-bezier(0.2, 0, 0, 1);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    font-family: 'Roboto', sans-serif;
    scroll-behavior: smooth;
}

/* Header */
.app-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 5%;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(17, 19, 24, 0.9);
    /* backdrop-filter: blur(12px); */
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.main-logo {
    height: 50px;
    filter: drop-shadow(0px 0px 8px rgba(168, 199, 255, 0.2));
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.link {
    text-decoration: none;
    color: #C4C6D0;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.link:hover, .link.active {
    color: var(--md-sys-color-primary);
}

/* Hero */
.hero {
    height: 65vh;
    display: flex;
    align-items: center;
    padding: 0 10%;
    background: radial-gradient(circle at 80% 20%, #1e2a3d 0%, transparent 60%);
}

.headline-large {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #fff;
    line-height: 1.1;
}

.body-large {
    font-size: 1.25rem;
    color: #C4C6D0;
    max-width: 600px;
    margin-bottom: 2.5rem;
}

/* Seções */
.section { padding: 5rem 10%; }
.headline-medium { font-weight: 400; color: #fff; }

/* Solution Cards */
.m3-solution-card {
    background: var(--md-sys-color-surface-container);
    border-radius: 28px;
    padding: 2.5rem;
    border: 1px solid transparent;
    transition: var(--ease);
    margin-bottom: 1.5rem;
}

.m3-solution-card:hover {
    background: #25272C;
    border-color: var(--md-sys-color-primary);
}

.solution-header { display: flex; gap: 1.5rem; align-items: center; }

.icon-box {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.solution-details { padding-left: calc(56px + 1.5rem); }

/* Portfolio Grid */
.m3-portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.portfolio-card {
    background: var(--md-sys-color-surface-container);
    border-radius: 28px;
    overflow: hidden;
    transition: transform 0.3s var(--ease);
}

.portfolio-card:hover { transform: translateY(-8px); }

.card-image { height: 180px; position: relative; }
.elevus-bg { background: linear-gradient(45deg, #6200EE, #3700B3); }
.lpr-bg { background: linear-gradient(45deg, #1e3a8a, #3b82f6); }
.agendae-bg { background: linear-gradient(45deg, #10b981, #059669); }

.card-badge {
    position: absolute;
    top: 1rem; right: 1rem;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: bold;
}

.card-content { padding: 1.5rem; }

/* Tech Tags */
.tech-stack { display: flex; gap: 8px; margin: 1rem 0; flex-wrap: wrap; }
.tech-tag {
    background: rgba(168, 199, 255, 0.1);
    color: var(--md-sys-color-primary);
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    border: 1px solid rgba(168, 199, 255, 0.2);
}

/* Drawer / Mobile */
.md-drawer {
    border: none;
    height: 100%;
    width: 300px;
    margin: 0;
    margin-right: auto;
    background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface);
    border-radius: 0 28px 28px 0;
    padding: 0;
}

.drawer-content { padding: 1.5rem; }
.drawer-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }

.fab { position: fixed; bottom: 2rem; right: 2rem; }

/* Media Queries */
@media (max-width: 850px) {
    .desktop-only { display: none !important; }
    .mobile-only { display: inline-flex; }
    .hero { height: auto; padding: 100px 5%; text-align: center; }
    .hero-inner { margin: 0 auto; }
    .headline-large { font-size: 2.5rem; }
    .solution-header { flex-direction: column; align-items: flex-start; }
    .solution-details { padding-left: 0; margin-top: 1rem; }
    .section { padding: 3rem 5%; }
}