.btn-premium {
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1) !important;
    border-radius: 0 !important;
}
.btn-premium:hover {
    transform: translateY(-5px) !important;
    box-shadow: 0 15px 30px rgba(13, 110, 58, 0.3) !important;
}
.btn-spax-pill {
    background-color: var(--spax-green);
    color: white;
    font-weight: 800;
    letter-spacing: 1px;
    padding: 20px 35px;
    border-radius: 0;
    text-transform: uppercase;
    font-size: 0.9rem;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 20px rgba(13, 110, 58, 0.15);
    cursor: pointer;
}

.btn-spax-pill:hover {
    /* Mantiene la paleta SPAX ajustando la mezcla automáticamente */
    background-color: color-mix(in srgb, var(--spax-green) 90%, black);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(13, 110, 58, 0.25);
    color: white;
}
.btn-pill-premium {
    background-color: var(--spax-green);
    color: white;
    font-weight: 800;
    letter-spacing: 1px;
    padding: 16px 36px;
    border-radius: 50px; 
    white-space: nowrap; 
    
    text-transform: uppercase;
    border: 0 solid var(--spax-green);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: inline-flex;
    align-items: center;
    justify-content: center; 
    gap: 10px;
    text-decoration: none;
}

.btn-pill-premium:hover {
    background-color: #0a562d;
    border-color: #0a562d;
    color: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-float); 
}
.btn-spax-primary-light {
    background-color: var(--spax-green);
    color: white;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: none;
    border-radius: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-spax-primary-light:hover {
    color: var(--spax-green);
    background-color: #f0f0f0;
}

.btn-spax-outline-green {
    background-color: transparent;
    color: var(--spax-green);
    border: 2px solid var(--spax-green);
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 0.375rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-spax-outline-green:hover {
    background-color: var(--spax-green);
    color: white;
    border-color: var(--spax-green);
}

.btn-circle-50 { 
    width: 50px; 
    height: 50px; 
    transition: 0.3s; 
    border-radius: 0.375rem;
}

.btn-formal {
    background-color: var(--spax-green);
    color: var(--spax-green);
    border-radius: 50px;
    padding: 15px 35px;
    font-weight: 700;
    text-transform: uppercase;
    border: none;
    transition: transform 0.2s ease;
}
.btn-formal:hover {
    transform: scale(1.05);
    color: white;
    background-color: #0a522b;
    box-shadow: 0 10px 20px rgba(13, 110, 58, 0.3);
}
#theme-toggle, #lang-toggle, #color-toggle {
    background: transparent;
    border: 2px solid white;
    color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

#theme-toggle:hover, #lang-toggle:hover, #color-toggle:hover { 
    background: white;
    color: var(--spax-green);
    transform: scale(1.1);
}

#lang-toggle {
    font-weight: 800;
    font-size: 0.85rem;
}

.spax-play-btn {
    width: 100px;
    height: 100px;
    background:white;
    backdrop-filter: blur(5px);
    border: 3px solid #ffffff; 
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color:  var(--spax-green);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.6);
    animation: spax-pulse-white 2s infinite;
}
.spax-play-btn i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}
.spax-play-btn:hover {
    background: var(--spax-green);
    transform: scale(1.1);
    border-color: white;
}
.spax-play-btn:hover i {
    transform: scale(1.1);
}