/* ============================================================
   BOATCHARTERS.PT — Advanced Buttons
   Efeitos: liquid fill, magnetic, split text, ripple, morphing
   ============================================================ */

/* ── Reset base do .btn ─────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.9rem 2rem;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    transition: color 0.3s;
}

/* ── Variante 1: Liquid Fill ────────────────────────────────── */
/* Preenchimento líquido que sobe de baixo para cima */
.btn-liquid {
    background: transparent;
    color: var(--cyan);
    border: 1.5px solid var(--cyan);
    border-radius: 2px;
}
.btn-liquid::before {
    content: '';
    position: absolute;
    bottom: -2px; left: -2px; right: -2px;
    height: 0;
    background: var(--cyan);
    transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 0;
}
.btn-liquid:hover::before { height: calc(100% + 4px); }
.btn-liquid:hover { color: var(--white); }
.btn-liquid span, .btn-liquid svg { position: relative; z-index: 1; }

/* ── Variante 2: Split Reveal ───────────────────────────────── */
/* Texto duplicado — um sobe, outro desce ao hover */
.btn-split {
    background: var(--text);
    color: var(--white);
    border-radius: 2px;
    overflow: hidden;
    padding: 0;
}
.btn-split-inner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 2rem;
    position: relative;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-split-clone {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 2rem;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--white);
    background: var(--cyan);
}
.btn-split:hover .btn-split-inner { transform: translateY(-100%); }
.btn-split:hover .btn-split-clone { transform: translateY(0); }

/* ── Variante 3: Magnetic Outline ───────────────────────────── */
/* Borda que se deforma ao hover (efeito morphing via clip-path) */
.btn-magnetic {
    background: transparent;
    color: var(--text);
    border: 1.5px solid var(--border);
    border-radius: 100px;
    padding: 0.85rem 2.2rem;
    transition: border-color 0.3s, color 0.3s, background 0.3s, border-radius 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-magnetic:hover {
    background: var(--text);
    color: var(--white);
    border-color: var(--text);
    border-radius: 4px;
}
.btn-magnetic svg { transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.btn-magnetic:hover svg { transform: translateX(4px); }

/* ── Variante 4: Ripple Glow ────────────────────────────────── */
/* Onda de luz que se expande do ponto de clique */
.btn-ripple {
    background: var(--cyan);
    color: var(--white);
    border-radius: 2px;
    overflow: hidden;
}
.btn-ripple::after {
    content: '';
    position: absolute;
    width: 0; height: 0;
    background: rgba(255,255,255,0.25);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    top: var(--ripple-y, 50%);
    left: var(--ripple-x, 50%);
    transition: width 0.6s ease-out, height 0.6s ease-out, opacity 0.6s;
    opacity: 0;
    pointer-events: none;
}
.btn-ripple.rippling::after {
    width: 300px; height: 300px;
    opacity: 1;
}
.btn-ripple span, .btn-ripple svg { position: relative; z-index: 1; }

/* ── Variante 5: Outline Trace ──────────────────────────────── */
/* Borda que se desenha ao hover (SVG stroke animation) */
.btn-trace {
    background: transparent;
    color: var(--text);
    padding: 0.9rem 2rem;
}
.btn-trace svg.btn-border {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    overflow: visible;
    pointer-events: none;
}
.btn-trace svg.btn-border rect {
    fill: none;
    stroke: var(--cyan);
    stroke-width: 1.5;
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    transition: stroke-dashoffset 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-trace:hover svg.btn-border rect { stroke-dashoffset: 0; }
.btn-trace:hover { color: var(--cyan); }

/* ── SVG arrows dentro dos botões ───────────────────────────── */
.btn svg:not(.btn-border) { width: 14px; height: 14px; flex-shrink: 0; }


/* ── Responsivo dos botões ──────────────────────────────────── */
@media (max-width: 768px) {
    .btn {
        font-size: 0.65rem;
        padding: 0.8rem 1.5rem;
        gap: 0.5rem;
    }

    .btn-magnetic {
        transform: none !important;
    }
}

@media (max-width: 480px) {
    .btn {
        font-size: 0.6rem;
        padding: 0.75rem 1.25rem;
    }
}