/* Voxtel Telecomunicacoes - Identidade Visual Oficial */
:root {
    --voxtel-navy: #0D2E5C;
    --voxtel-blue: #2B6CB0;
    --voxtel-light: #4A90C4;
    --voxtel-accent: #00C7FC;
    --voxtel-bg: #F4F7FB;
    --voxtel-bg-soft: #EAF1F9;
    --voxtel-white: #FFFFFF;
    --voxtel-text: #1A2237;
    --voxtel-muted: #5C6B7A;
    --voxtel-border: #DCE5EF;
    --voxtel-success: #2BA66B;
    --shadow-sm: 0 1px 2px rgba(13, 46, 92, 0.06);
    --shadow-md: 0 6px 18px rgba(13, 46, 92, 0.08);
    --shadow-lg: 0 18px 48px rgba(13, 46, 92, 0.14);
    --radius: 12px;
    --radius-lg: 18px;
    --transition: all 0.25s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    line-height: 1.6;
    color: var(--voxtel-text);
    background: var(--voxtel-white);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--voxtel-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--voxtel-navy); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 88px 0;
    position: relative;
    background: var(--voxtel-white);
}
section.bg-soft { background: var(--voxtel-bg); }

h1, h2, h3, h4 {
    font-family: 'Inter', sans-serif;
    color: var(--voxtel-navy);
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 18px;
}
h1 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); letter-spacing: -0.015em; }
h3 { font-size: 1.25rem; }

p { margin: 0 0 14px; color: var(--voxtel-text); }

.section-eyebrow {
    display: inline-block;
    color: var(--voxtel-blue);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.section-title {
    text-align: center;
    margin: 0 0 16px;
}
.section-description {
    text-align: center;
    max-width: 780px;
    margin: 0 auto 56px;
    color: var(--voxtel-muted);
    font-size: 1.05rem;
}

.cta-button, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--voxtel-blue), var(--voxtel-navy));
    color: var(--voxtel-white) !important;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(43, 108, 176, 0.25);
    transition: var(--transition);
    text-decoration: none;
}
.cta-button:hover, .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(43, 108, 176, 0.35);
    color: var(--voxtel-white) !important;
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--voxtel-blue);
    color: var(--voxtel-blue) !important;
    box-shadow: none;
    padding: 12px 26px;
}
.btn-outline:hover {
    background: var(--voxtel-blue);
    color: var(--voxtel-white) !important;
}

.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

main { padding-top: 76px; }

@media (max-width: 960px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    section { padding: 64px 0; }
}