/* ---------------- BUTTON ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 40px;
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: 50px; 
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
}

.btn-icon {
    margin-left: 12px;
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0.7;
    transform: translateX(0);
}

.btn:hover .btn-icon {
    transform: translateX(6px) rotate(-5deg);
    opacity: 1;
}

.btn:active {
    transform: translateY(2px) scale(0.97);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}


/* ---------------- SOLID BUTTON ---------------- */
.btn-solid {
    background: linear-gradient(135deg, var(--theme-color), #ffb347);
    color: var(--white);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    isolation: isolate;
}

.btn-solid::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255,255,255,0.4),
        transparent
    );
    transition: left 0.6s ease;
    z-index: 2;
    animation: shimmer 3s infinite linear;
    opacity: 0.3;
}

.btn-solid::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50px;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.2), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.btn-solid:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 15px 35px rgba(5,138,216,0.4), 0 0 20px rgba(5,138,216,0.3);
    transform: translateY(-4px) scale(1.02);
    color: var(--white);
}

.btn-solid:hover::before {
    left: 100%;
}

.btn-solid:hover::after {
    opacity: 1;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}


/* ---------------- OUTLINE BUTTON ---------------- */
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.8);
    box-shadow: none;
    backdrop-filter: blur(5px); 
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-outline::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--white);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
    z-index: -1;
    border-radius: 50px;
}

.btn-outline:hover {
    color: var(--secondary);
    border-color: transparent; 
    box-shadow: 0 10px 25px rgba(255,255,255,0.3);
    transform: translateY(-3px) scale(1.02);
}

.btn-outline:hover::before {
    transform: translateX(0);
}


/* ---------------- OUTLINE DARK BUTTON ---------------- */
.btn-outline-dark {
    background: transparent;
    color: var(--secondary);
    border: 2px solid var(--secondary);
    overflow: hidden;
    position: relative;
}

.btn-outline-dark::before {
    content: "";
    position: absolute;
    top: var(--mouse-y, 50%);
    left: var(--mouse-x, 50%);
    width: 0;
    height: 0;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
    z-index: -1;
    border-radius: 50%;
}

.btn-outline-dark:hover {
    color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(5,138,216,0.2);
    transform: translateY(-3px) scale(1.02);
}

.btn-outline-dark:hover::before {
    width: 400px;
    height: 400px;
    opacity: 1;
}