/* =====================================================
   Topazioverse — HOME (Dark/Light Mode Automático)
===================================================== */

/* -----------------------------------------
   VARIÁVEIS DE TEMA
----------------------------------------- */
:root {
    --bg: #020204;
    --bg-alt: rgba(10, 5, 20, 0.75);
    --text: #eee;
    --text-soft: #c7b4ff;
    --text-strong: #f4edff;

    --card-bg: rgba(10, 5, 20, 0.75);
    --card-border: rgba(150, 100, 255, 0.28);
    --card-shadow: rgba(130, 60, 255, 0.28);

    --subtitle: #d8c9ff;
    --hero-shadow-1: #a26dff;
    --hero-shadow-2: #6227ff;
}

/* Tema Light */
body.light-theme {
    --bg: #f4f4f6;
    --bg-alt: rgba(255, 255, 255, 0.8);
    --text: #1a1a1a;
    --text-soft: #4b3a70;
    --text-strong: #2b1d46;

    --card-bg: rgba(255, 255, 255, 0.75);
    --card-border: rgba(100, 60, 180, 0.35);
    --card-shadow: rgba(80, 40, 160, 0.15);

    --subtitle: #4a3a80;
    --hero-shadow-1: #9570ff;
    --hero-shadow-2: #5c34ff;
}

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

body {
    font-family: "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    transition: background 0.4s ease, color 0.4s ease;
    position: relative;
}

/* -----------------------------------------
   PARTÍCULAS E FUNDOS
----------------------------------------- */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at center,
            rgba(40, 0, 75, 0.35),
            rgba(0, 0, 0, 0.92));
    z-index: -2;
    transition: 0.4s ease;
}

body.light-theme::before {
    background: radial-gradient(circle at center,
            rgba(180, 160, 255, 0.15),
            rgba(240, 240, 255, 0.8));
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    background: url('/img/mist.png') center/cover repeat;
    opacity: 0.03;
    z-index: -1;
    pointer-events: none;
}

/* -----------------------------------------
   HERO
----------------------------------------- */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 900px;
    padding: 25px;
    position: relative;
    animation: fadeInUp 1.3s ease forwards;
    opacity: 0;
}

.hero h1 {
    font-size: 2.8rem;
    color: var(--text-strong);
    margin-bottom: 18px;
    text-shadow:
        0 0 18px var(--hero-shadow-1),
        0 0 40px var(--hero-shadow-2);
}

.hero p {
    font-size: 1.25rem;
    color: var(--subtitle);
    text-shadow: 0 0 12px rgba(60, 30, 120, 0.4);
}

/* -----------------------------------------
   SEÇÃO "EXPLORE"
----------------------------------------- */
.explore {
    padding: 100px 25px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.explore h2 {
    font-size: 2.3rem;
    color: var(--text-strong);
    text-shadow: 0 0 14px rgba(120, 70, 255, 0.6);
    margin-bottom: 15px;
}

.subtitle {
    font-size: 1.15rem;
    color: var(--text-soft);
    margin-bottom: 60px;
}

/* -----------------------------------------
   CARDS "EXPLORE"
----------------------------------------- */
.cards {
    display: flex;
    justify-content: center;
    gap: 35px;
    flex-wrap: wrap;
}

.card {
    background: var(--card-bg);
    padding: 25px;
    width: 300px;
    border-radius: 14px;
    position: relative;
    border: 1px solid var(--card-border);
    box-shadow: 0 0 14px var(--card-shadow);
    backdrop-filter: blur(4px);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    overflow: hidden;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 30px rgba(170, 90, 255, 0.6);
}

.card-glow {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle,
            rgba(160, 80, 255, 0.35),
            transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.card:hover .card-glow {
    opacity: 1;
}

.card h3 {
    color: var(--text-strong);
    font-size: 1.4rem;
    margin-bottom: 10px;
    text-shadow: 0 0 10px rgba(120, 70, 255, 0.6);
}

.card p {
    color: var(--text-soft);
    font-size: 0.95rem;
    line-height: 1.4rem;
}

/* -----------------------------------------
   SEÇÃO "PROMO ULTRA" — NOVA
----------------------------------------- */
.promo-ultra {
    padding: 80px 25px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.promo-ultra h2 {
    font-size: 2.5rem;
    color: var(--text-strong);
    text-shadow: 0 0 18px rgba(180, 70, 255, 0.7);
    margin-bottom: 50px;
    animation: fadeInUp 1.5s ease forwards;
}

.promo-cards-ultra {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.promo-card-ultra {
    background: var(--card-bg);
    padding: 25px;
    width: 300px;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    box-shadow: 0 0 20px var(--card-shadow);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.promo-card-ultra:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 0 45px rgba(200, 80, 255, 0.7);
}

/* Brilho animado */
.glow-circle {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(180, 80, 255, 0.3), transparent 70%);
    top: -50px;
    right: -50px;
    border-radius: 50%;
    filter: blur(40px);
    animation: floatGlow 3s ease-in-out infinite alternate;
    z-index: 1;
}

/* Canvas de partículas dentro do card */
.particles-card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Textos */
.promo-card-ultra h3, .promo-card-ultra p {
    position: relative;
    z-index: 2;
    color: var(--text-strong);
}

.promo-card-ultra p {
    color: var(--text-soft);
}

/* -----------------------------------------
   ANIMAÇÕES
----------------------------------------- */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatGlow {
    0% { transform: translateY(0) translateX(0); opacity: 0.8; }
    50% { transform: translateY(10px) translateX(10px); opacity: 1; }
    100% { transform: translateY(0) translateX(0); opacity: 0.8; }
}

/* -----------------------------------------
   RESPONSIVO
----------------------------------------- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .card, .promo-card-ultra {
        width: 90%;
    }
}