.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    background-color: transparent;
    border: 2px solid transparent;
    padding: 10px 24px;
    font-size: 0.95rem;
    border-radius: 12px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    gap: 8px;
}
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2), 0 2px 4px -1px rgba(79, 70, 229, 0.1);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
}
.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
    border-radius: 14px;
}
.btn-outline-dark {
    border-color: var(--border-color);
    color: var(--text-main);
    background: white;
}
.btn-outline-dark:hover {
    background-color: #f8fafc;
    border-color: var(--text-main);
}
.btn-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 4px;
    border-radius: 6px;
}
.btn-link:hover {
    background: rgba(0,0,0,0.05);
    color: var(--text-main);
}