/* --- Core & Variables --- */
:root {
    --bg-dark: #020617;
    --bg-card: #0f172a;
    --cyan-primary: #22d3ee;
    --cyan-dark: #0891b2;
    --slate-border: #1e293b;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Evita que o título da secção fique colado ao topo por causa da navbar sticky */
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
}

.font-mono {
    font-family: 'JetBrains Mono', monospace;
}

/* --- Utility Components --- */
.gradient-text { 
    background: linear-gradient(to right, #fff, var(--cyan-primary)); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
}

.btn-primary {
    background: linear-gradient(135deg, var(--cyan-dark) 0%, #0e7490 100%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(8, 145, 178, 0.4);
}

/* --- Terminal & Animations --- */
.terminal-window {
    background: rgba(2, 6, 23, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--slate-border);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* Importante: Esta classe permite que o JS controle a entrada */
.terminal-body > * {
    opacity: 0; 
}

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

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.cursor-blink {
    animation: blink 1s step-end infinite;
    display: inline-block;
    width: 8px;
    height: 16px;
    background-color: var(--cyan-primary);
    margin-left: 4px;
    vertical-align: middle;
}

/* --- Features --- */
.feature-card {
    transition: all 0.3s ease;
    border: 1px solid var(--slate-border);
    background-color: rgba(15, 23, 42, 0.3);
}

.feature-card:hover {
    border-color: rgba(34, 211, 238, 0.4);
    transform: translateY(-5px);
    background-color: rgba(15, 23, 42, 0.8);
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { 
    background: var(--slate-border); 
    border-radius: 10px; 
}
::-webkit-scrollbar-thumb:hover { background: #334155; }