/* ---------- FONTE FUTURISTA ---------- */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@300;400;700&display=swap');

* {
    box-sizing: border-box;
    transition: background 0.4s, color 0.4s, border 0.4s, box-shadow 0.4s;
}

body {
    margin: 0;
    background: #030008;
    color: #d8eafe;
    font-family: 'Orbitron', sans-serif;
    overflow-x: hidden;
}

/* ---------- TEXTO ---------- */
h1, h2, h3, h4 {
    color: #00eaff;
    text-shadow: 0 0 12px #00eaff;
}

/* ---------- LINKS ---------- */
a {
    text-decoration: none;
    color: #00eaff;
}

/* ---------- HEADER / NAVBAR ---------- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 40px;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav a {
    margin: 0 15px;
    font-size: 15px;
    transition: 0.3s;
}

nav a:hover {
    color: #ffffff;
    text-shadow: 0 0 15px #00eaff;
}

/* ---------- BOTÃO DE TEMA ---------- */
#theme-toggle {
    background: none;
    border: 1px solid rgba(0,234,255,0.4);
    padding: 8px 12px;
    border-radius: 8px;
    color: #00eaff;
    cursor: pointer;
    font-size: 18px;
    transition: 0.3s;
    backdrop-filter: blur(6px);
}

#theme-toggle:hover {
    background: rgba(0,234,255,0.2);
    transform: scale(1.1);
}

/* ---------- HERO ---------- */
.hero {
    height: 88vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    padding: 0 10px;
    background: radial-gradient(circle at center, #041023, #010009);
    animation: glow 6s infinite alternate;
}

@keyframes glow {
    from { box-shadow: inset 0 0 50px #001; }
    to   { box-shadow: inset 0 0 150px #002744; }
}

.hero p {
    max-width: 700px;
    margin: auto;
    font-size: 18px;
}

/* ---------- SEÇÕES ---------- */
section {
    padding: 60px 10%;
}

/* ---------- CARDS ---------- */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
    gap: 30px;
}

.card {
    background: rgba(255,255,255,0.05);
    padding: 25px;
    text-align: center;
    border-radius: 15px;
    border: 1px solid rgba(0,234,255,0.2);
    backdrop-filter: blur(10px);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-12px) scale(1.03);
    box-shadow: 0 0 25px #00eaff;
}

/* ---------- FOOTER ---------- */
footer {
    text-align: center;
    padding: 18px;
    background: rgba(255,255,255,0.05);
    margin-top: 40px;
    font-size: 14px;
    border-top: 1px solid rgba(0,234,255,0.15);
}

/* ==========================================================
                ███   TEMA CLARO   ███
========================================================== */

body.light {
    background: #f4f7ff;
    color: #1a1a1a;
}

body.light h1, 
body.light h2, 
body.light h3, 
body.light h4 {
    color: #0051a8;
    text-shadow: none;
}

body.light a {
    color: #0051a8;
}

body.light header {
    background: rgba(0,0,0,0.05);
}

body.light .hero {
    background: radial-gradient(circle at center, #d9e8ff, #b8cff5);
    animation: none;
}

body.light .card {
    background: rgba(255,255,255,0.9);
    border: 1px solid rgba(0,0,0,0.15);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

body.light footer {
    background: rgba(0,0,0,0.06);
    border-color: rgba(0,0,0,0.1);
}

body.light #theme-toggle {
    border-color: #0051a8;
    color: #0051a8;
}

body.light #theme-toggle:hover {
    background: rgba(0,81,168,0.2);
}