/* ==============================================
   1. VARIÁVEIS, RESET E BASE
============================================== */
:root {
    --bordo: #800020;
    --bordo-dark: #4d0013;
    --dourado: #D4AF37;
    --dourado-light: #f1d592;
    --branco: #ffffff;
    --gelo: #f8f9fa;
    --texto: #1a1a1a;
    --transicao: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--texto);
    background-color: var(--branco);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==============================================
   2. HEADER E NAVEGAÇÃO
============================================== */
.main-header, .global-header {
    background: var(--bordo-dark);
    padding: 20px 0;
    border-bottom: 3px solid var(--dourado);
}

.main-header .container, .global-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -1px;
}

.logo .nexus { color: var(--branco); }
.logo .innova { color: var(--dourado); }

nav ul {
    display: flex;
    list-style: none;
}

nav ul li a {
    color: var(--branco);
    text-decoration: none;
    margin-left: 25px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: 0.3s;
}

nav ul li a:hover { color: var(--dourado); }

/* ==============================================
   3. HERO SECTION PREMIUM
============================================== */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--bordo-dark) 0%, var(--bordo) 100%);
    padding: 160px 0 120px;
    color: var(--branco);
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212,175,55,0.05) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 25px;
    letter-spacing: -2px;
}

.hero .highlight {
    background: linear-gradient(to right, var(--dourado-light), var(--dourado));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ==============================================
   4. BOTÕES E CARDS
============================================== */
.btn-primary {
    background: var(--dourado);
    color: var(--bordo);
    padding: 18px 35px;
    border-radius: 12px;
    font-weight: 800;
    text-decoration: none;
    display: inline-block;
    transition: var(--transicao);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
}

.btn-primary:hover { background: var(--branco); transform: scale(1.05); }

.btn-secondary {
    border: 2px solid var(--branco);
    color: var(--branco);
    padding: 16px 35px;
    border-radius: 12px;
    font-weight: 800;
    text-decoration: none;
    display: inline-block;
    margin-left: 15px;
    transition: var(--transicao);
}

.btn-secondary:hover { background: rgba(255,255,255,0.1); }

.grid-esteiras {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card-esteira {
    background: var(--branco);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(0,0,0,0.05);
    transition: var(--transicao);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-esteira:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(128, 0, 32, 0.1);
}

.gold-border { border: 2px solid var(--dourado); }

/* ==============================================
   5. ANIMAÇÕES (REVEAL) E FOOTER
============================================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* A classe que esconde o conteúdo inicialmente */
.reveal { opacity: 0; transition: var(--transicao); }
/* A classe que o JS adiciona para mostrar o conteúdo */
.reveal.active { animation: fadeInUp 0.8s forwards; }

.main-footer {
    background: var(--bordo-dark);
    color: var(--branco);
    padding: 40px 0;
    text-align: center;
    font-size: 0.8rem;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}