/* Button Base Styles */
.btn-base {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    transition: var(--transition-all);
    cursor: pointer;
    border: none;
}

/* Primary Button */
.btn-primary {
    composes: btn-base;
    background: linear-gradient(45deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(var(--primary), 0.2);
    border-radius: var(--radius-full);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--primary), 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
    composes: btn-base;
    background: rgba(var(--primary), 0.1);
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: var(--radius-full);
}

.btn-secondary:hover {
    background: rgba(var(--primary), 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(var(--primary), 0.15);
}

.btn-secondary:active {
    transform: translateY(0);
}

/* Ghost Button */
.btn-ghost {
    composes: btn-base;
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* Icon Button */
.btn-icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--text-secondary);
    transition: var(--transition-all);
}

.btn-icon:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.btn-icon i {
    font-size: 1.25rem;
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Button States */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading::after {
    content: '';
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-right-color: currentColor;
    border-radius: 50%;
    position: absolute;
    right: 0.75rem;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-disabled,
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button Groups */
.btn-group {
    display: inline-flex;
    gap: 0.5rem;
}

.btn-group-vertical {
    display: inline-flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Full Width Button */
.btn-full {
    width: 100%;
}