:root {
    /* Cores da Logo PLM Infratech */
    --bg-dark: #0a0a0c;
    --bg-panel: #141417;
    --bg-card: rgba(255, 255, 255, 0.03);
    
    --primary-blue: #007bff;
    --light-blue: #4da3ff;
    --dark-blue: #0044cc;
    
    --text-main: #f0f0f0;
    --text-muted: #a0a0a0;
    
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(10, 10, 12, 0.7);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Marca D'água da Logo PLM no Fundo */
body::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90vw;
    max-width: 850px;
    height: 85vh;
    max-height: 850px;
    background: url('../assets/images/logo.png') no-repeat center center / contain;
    opacity: 0.045;
    z-index: 0;
    pointer-events: none;
    filter: drop-shadow(0 0 40px rgba(0, 123, 255, 0.4));
}

/* Brilhos e Luzes de Fundo Ambientais */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 15% 15%, rgba(0, 123, 255, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(0, 68, 204, 0.1) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(77, 163, 255, 0.04) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: #ffffff;
}

a {
    text-decoration: none;
    color: var(--text-main);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-blue);
}

ul {
    list-style: none;
}

/* Utilitários */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--light-blue), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section {
    padding: 80px 0;
}

/* Botões */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: none;
    outline: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.5);
    color: white;
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
    background: rgba(0, 123, 255, 0.1);
    transform: translateY(-2px);
}

.btn-secondary {
    background: #25d366;
    color: white;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-secondary:hover {
    background: #20ba5a;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
    color: white;
}

.btn i {
    margin-right: 8px;
}

/* Estrutura Principal */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

main {
    flex-grow: 1;
    padding-top: 80px; /* Compensa a navbar fixa */
}

/* Botão Flutuante do WhatsApp */
.whatsapp-float-container {
    position: fixed;
    bottom: 25px;
    right: 25px;
    z-index: 9999;
}

.whatsapp-float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: white;
    border-radius: 50%;
    font-size: 32px;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
}

.whatsapp-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
    color: white;
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    background: var(--bg-panel);
    color: white;
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.whatsapp-float-btn:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
}