:root {
    --bg-color: #0a0a0a;
    --grid-color: rgba(255, 255, 255, 0.05);
    --accent-color: #e0e0e0;
    --text-muted: #666;
    --font-main: 'Inter', 'Segoe UI', monospace;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

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

body {
    background-color: var(--bg-color);
    color: var(--accent-color);
    font-family: var(--font-main);
    overflow-x: hidden;
    overflow-y: auto;
    line-height: 1.6;
}

.background-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    pointer-events: none;
}



section {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;

    inset: 0;
    height: auto;
    width: 100%;
    padding: 8%;
    position: relative;
    min-height: 90dvh;

    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

section.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;

    position: relative;
    display: grid;
    place-content: center;

    animation: fadeIn 0.4s ease-out forwards;
}

h1, h2 {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 400;
}

.label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.btn-briefing {
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 12px 24px;
    font-family: var(--font-mono);
    cursor: pointer;
    text-transform: uppercase;
    font-size: 0.8rem;
    transition: all 0.3s ease;
    width: fit-content;
    max-width: 100%;
}

.btn-briefing:hover {
    background: var(--accent-color);
    color: var(--bg-color);
}

/* Tela 1 - Home */
#home {
    grid-template-rows: 1fr auto 1fr;
    align-items: center;
}

.logo-placeholder {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -2px;
    margin-left: -5%;
}

/* Tela 2 - Operacional */
#contexto {
    grid-template-columns: 1fr;
    gap: 40px;
}

.operacional-report {
    border-left: 1px solid var(--text-muted);
    padding-left: 20px;
}

/* Tela 3 - Sistema */
#sistema {
    text-align: center;
    place-items: center;
}

.container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
    }

.diagrama-container {
    display: flex;
    gap: 20px;
    margin-top: 50px;
    flex-wrap: wrap;
    justify-content: center;
}

.block {
    border: 1px solid var(--text-muted);
    padding: 20px 40px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    position: relative;
}

/* Tela 4 - Contato */
#posicionamento {
    place-content: center;
    max-width: 600px;
    margin: 0 auto;
}

/* Animações Sutis */
.fade-in {
    animation: fadeIn 1s forwards;
}

footer {
    position: static !important;
    margin-top: auto;
    text-align: center;

    /* position: fixed;  */
    bottom: 15px; 
    left: 15px; 
    font-family: monospace; 
    font-size: 10px; 
    color: #333; 
    letter-spacing: 1px;
} 


@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1024px) {
    .logo-placeholder {
        margin-left: 0;
    }
}

/* Permitir rolagem */
@media (max-width: 768px) {

    /* Diagrama quebra linha */
    .diagrama-container {
        flex-wrap: wrap;
        justify-content: center;
    }

    h1 {
        font-size: 1.4rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    /* Inputs responsivos */
    input {
        width: 100%;
    }

    .logo-placeholder {
        font-size: 1.8rem;
        margin-left: 0;
        text-align: center;
    }

    #contexto {
        gap: 20px;
        grid-template-columns: 1fr;
    }

    .operacional-report {
        border-left: none;
        padding-left: 0;
        border-top: 1px solid var(--text-muted);
        padding-top: 20px;
    }

    .block {
        padding: 15px 20px;
        font-size: 0.7rem;
    }

    .btn-briefing {
        width: 100%;
        text-align: center;
    }
}